Home / 3,889,303,339.70-5,367,238,871.08-2,129,170,747.70

Finding the Fourth Proportional to 3,889,303,339.70, 5,367,238,871.08 and 2,129,170,747.70

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Solution

The fourth proportional to 3,889,303,339.70, 5,367,238,871.08 and 2,129,170,747.70 is: 2,938,255,775.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,889,303,339.70 : 5,367,238,871.08 = 2,129,170,747.70 : x
  2. Step 2: Convert to fraction form
    3,889,303,339.70/5,367,238,871.08 = 2,129,170,747.70/x
  3. Step 3: Cross multiply
    3,889,303,339.70x = 5,367,238,871.08 × 2,129,170,747.70
  4. Step 4: Simplify right side
    3,889,303,339.70x = 11,427,768,000,221,906,944
  5. Step 5: Solve for x
    x = 11,427,768,000,221,906,944/3,889,303,339.70
  6. Step 6: Final answer
    x = 2,938,255,775.42

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Half scale
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Double scale
Find fourth proportional to 3,889,303,340.70, 5,367,238,872.46 and 2,129,170,748.70
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.