Home / 747,712.90-1,121,569.35-432,784.90

Finding the Fourth Proportional to 747,712.90, 1,121,569.35 and 432,784.90

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Solution

The fourth proportional to 747,712.90, 1,121,569.35 and 432,784.90 is: 649,177.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,712.90 : 1,121,569.35 = 432,784.90 : x
  2. Step 2: Convert to fraction form
    747,712.90/1,121,569.35 = 432,784.90/x
  3. Step 3: Cross multiply
    747,712.90x = 1,121,569.35 × 432,784.90
  4. Step 4: Simplify right side
    747,712.90x = 485,398,278,982.82
  5. Step 5: Solve for x
    x = 485,398,278,982.82/747,712.90
  6. Step 6: Final answer
    x = 649,177.35

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Double scale
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Similar ratio
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1.5x scale

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.