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Finding the Fourth Proportional to 521,565.60, 782,348.40 and 432,992.10

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Solution

The fourth proportional to 521,565.60, 782,348.40 and 432,992.10 is: 649,488.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,565.60 : 782,348.40 = 432,992.10 : x
  2. Step 2: Convert to fraction form
    521,565.60/782,348.40 = 432,992.10/x
  3. Step 3: Cross multiply
    521,565.60x = 782,348.40 × 432,992.10
  4. Step 4: Simplify right side
    521,565.60x = 338,750,676,647.64
  5. Step 5: Solve for x
    x = 338,750,676,647.64/521,565.60
  6. Step 6: Final answer
    x = 649,488.15

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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.