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Finding the Fourth Proportional to 610,435.20, 915,652.80 and 492,337.20

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Solution

The fourth proportional to 610,435.20, 915,652.80 and 492,337.20 is: 738,505.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,435.20 : 915,652.80 = 492,337.20 : x
  2. Step 2: Convert to fraction form
    610,435.20/915,652.80 = 492,337.20/x
  3. Step 3: Cross multiply
    610,435.20x = 915,652.80 × 492,337.20
  4. Step 4: Simplify right side
    610,435.20x = 450,809,935,724.16
  5. Step 5: Solve for x
    x = 450,809,935,724.16/610,435.20
  6. Step 6: Final answer
    x = 738,505.80

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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.