Home / 1,188,283,985.20-1,639,749,610.35-659,606,330.78

Finding the Fourth Proportional to 1,188,283,985.20, 1,639,749,610.35 and 659,606,330.78

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Solution

The fourth proportional to 1,188,283,985.20, 1,639,749,610.35 and 659,606,330.78 is: 910,211,058.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,283,985.20 : 1,639,749,610.35 = 659,606,330.78 : x
  2. Step 2: Convert to fraction form
    1,188,283,985.20/1,639,749,610.35 = 659,606,330.78/x
  3. Step 3: Cross multiply
    1,188,283,985.20x = 1,639,749,610.35 × 659,606,330.78
  4. Step 4: Simplify right side
    1,188,283,985.20x = 1,081,589,223,872,699,392
  5. Step 5: Solve for x
    x = 1,081,589,223,872,699,392/1,188,283,985.20
  6. Step 6: Final answer
    x = 910,211,058.42

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Double scale
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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.