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Finding the Fourth Proportional to 539,702.88, 745,451.28 and 404,342.16

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Solution

The fourth proportional to 539,702.88, 745,451.28 and 404,342.16 is: 558,487.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,702.88 : 745,451.28 = 404,342.16 : x
  2. Step 2: Convert to fraction form
    539,702.88/745,451.28 = 404,342.16/x
  3. Step 3: Cross multiply
    539,702.88x = 745,451.28 × 404,342.16
  4. Step 4: Simplify right side
    539,702.88x = 301,417,380,729.97
  5. Step 5: Solve for x
    x = 301,417,380,729.97/539,702.88
  6. Step 6: Final answer
    x = 558,487.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.