Home / 747,734.40-1,121,601.60-432,806.40

Finding the Fourth Proportional to 747,734.40, 1,121,601.60 and 432,806.40

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Solution

The fourth proportional to 747,734.40, 1,121,601.60 and 432,806.40 is: 649,209.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,734.40 : 1,121,601.60 = 432,806.40 : x
  2. Step 2: Convert to fraction form
    747,734.40/1,121,601.60 = 432,806.40/x
  3. Step 3: Cross multiply
    747,734.40x = 1,121,601.60 × 432,806.40
  4. Step 4: Simplify right side
    747,734.40x = 485,436,350,730.24
  5. Step 5: Solve for x
    x = 485,436,350,730.24/747,734.40
  6. Step 6: Final answer
    x = 649,209.60

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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.