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Finding the Fourth Proportional to 572,002.10, 858,003.15 and 478,690.10

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Solution

The fourth proportional to 572,002.10, 858,003.15 and 478,690.10 is: 718,035.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,002.10 : 858,003.15 = 478,690.10 : x
  2. Step 2: Convert to fraction form
    572,002.10/858,003.15 = 478,690.10/x
  3. Step 3: Cross multiply
    572,002.10x = 858,003.15 × 478,690.10
  4. Step 4: Simplify right side
    572,002.10x = 410,717,613,673.82
  5. Step 5: Solve for x
    x = 410,717,613,673.82/572,002.10
  6. Step 6: Final answer
    x = 718,035.15

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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.