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Finding the Fourth Proportional to 539,164.20, 807,148.86 and 399,549.48

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Solution

The fourth proportional to 539,164.20, 807,148.86 and 399,549.48 is: 598,140.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,164.20 : 807,148.86 = 399,549.48 : x
  2. Step 2: Convert to fraction form
    539,164.20/807,148.86 = 399,549.48/x
  3. Step 3: Cross multiply
    539,164.20x = 807,148.86 × 399,549.48
  4. Step 4: Simplify right side
    539,164.20x = 322,495,907,295.59
  5. Step 5: Solve for x
    x = 322,495,907,295.59/539,164.20
  6. Step 6: Final answer
    x = 598,140.43

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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.