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Finding the Fourth Proportional to 10,442,689.60, 15,664,034.40 and 5,955,419.20

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Solution

The fourth proportional to 10,442,689.60, 15,664,034.40 and 5,955,419.20 is: 8,933,128.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,442,689.60 : 15,664,034.40 = 5,955,419.20 : x
  2. Step 2: Convert to fraction form
    10,442,689.60/15,664,034.40 = 5,955,419.20/x
  3. Step 3: Cross multiply
    10,442,689.60x = 15,664,034.40 × 5,955,419.20
  4. Step 4: Simplify right side
    10,442,689.60x = 93,285,891,215,220.48
  5. Step 5: Solve for x
    x = 93,285,891,215,220.48/10,442,689.60
  6. Step 6: Final answer
    x = 8,933,128.80

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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.