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Finding the Fourth Proportional to 572,003.60, 858,005.40 and 478,691.60

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Solution

The fourth proportional to 572,003.60, 858,005.40 and 478,691.60 is: 718,037.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,003.60 : 858,005.40 = 478,691.60 : x
  2. Step 2: Convert to fraction form
    572,003.60/858,005.40 = 478,691.60/x
  3. Step 3: Cross multiply
    572,003.60x = 858,005.40 × 478,691.60
  4. Step 4: Simplify right side
    572,003.60x = 410,719,977,734.64
  5. Step 5: Solve for x
    x = 410,719,977,734.64/572,003.60
  6. Step 6: Final answer
    x = 718,037.40

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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.