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Finding the Fourth Proportional to 755,390.62, 1,042,500 and 433,130.70

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Solution

The fourth proportional to 755,390.62, 1,042,500 and 433,130.70 is: 597,755.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    755,390.62 : 1,042,500 = 433,130.70 : x
  2. Step 2: Convert to fraction form
    755,390.62/1,042,500 = 433,130.70/x
  3. Step 3: Cross multiply
    755,390.62x = 1,042,500 × 433,130.70
  4. Step 4: Simplify right side
    755,390.62x = 451,538,754,750
  5. Step 5: Solve for x
    x = 451,538,754,750/755,390.62
  6. Step 6: Final answer
    x = 597,755.31

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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.