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Finding the Fourth Proportional to 539,287.20, 807,861.60 and 472,802.40

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Solution

The fourth proportional to 539,287.20, 807,861.60 and 472,802.40 is: 708,266.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,287.20 : 807,861.60 = 472,802.40 : x
  2. Step 2: Convert to fraction form
    539,287.20/807,861.60 = 472,802.40/x
  3. Step 3: Cross multiply
    539,287.20x = 807,861.60 × 472,802.40
  4. Step 4: Simplify right side
    539,287.20x = 381,958,903,347.84
  5. Step 5: Solve for x
    x = 381,958,903,347.84/539,287.20
  6. Step 6: Final answer
    x = 708,266.21

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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.