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Finding the Fourth Proportional to 572,731.60, 859,097.40 and 479,419.60

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Solution

The fourth proportional to 572,731.60, 859,097.40 and 479,419.60 is: 719,129.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,731.60 : 859,097.40 = 479,419.60 : x
  2. Step 2: Convert to fraction form
    572,731.60/859,097.40 = 479,419.60/x
  3. Step 3: Cross multiply
    572,731.60x = 859,097.40 × 479,419.60
  4. Step 4: Simplify right side
    572,731.60x = 411,868,131,869.04
  5. Step 5: Solve for x
    x = 411,868,131,869.04/572,731.60
  6. Step 6: Final answer
    x = 719,129.40

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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.