Home / 8,220,474.70-12,330,712.05-7,889,800.30

Finding the Fourth Proportional to 8,220,474.70, 12,330,712.05 and 7,889,800.30

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Solution

The fourth proportional to 8,220,474.70, 12,330,712.05 and 7,889,800.30 is: 11,834,700.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,220,474.70 : 12,330,712.05 = 7,889,800.30 : x
  2. Step 2: Convert to fraction form
    8,220,474.70/12,330,712.05 = 7,889,800.30/x
  3. Step 3: Cross multiply
    8,220,474.70x = 12,330,712.05 × 7,889,800.30
  4. Step 4: Simplify right side
    8,220,474.70x = 97,286,855,631,303.62
  5. Step 5: Solve for x
    x = 97,286,855,631,303.62/8,220,474.70
  6. Step 6: Final answer
    x = 11,834,700.45

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.