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Finding the Fourth Proportional to 576,010.20, 864,015.30 and 432,931.80

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Solution

The fourth proportional to 576,010.20, 864,015.30 and 432,931.80 is: 649,397.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,010.20 : 864,015.30 = 432,931.80 : x
  2. Step 2: Convert to fraction form
    576,010.20/864,015.30 = 432,931.80/x
  3. Step 3: Cross multiply
    576,010.20x = 864,015.30 × 432,931.80
  4. Step 4: Simplify right side
    576,010.20x = 374,059,699,056.54
  5. Step 5: Solve for x
    x = 374,059,699,056.54/576,010.20
  6. Step 6: Final answer
    x = 649,397.70

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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.