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Finding the Fourth Proportional to 521,566.60, 782,349.90 and 432,993.10

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Solution

The fourth proportional to 521,566.60, 782,349.90 and 432,993.10 is: 649,489.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,566.60 : 782,349.90 = 432,993.10 : x
  2. Step 2: Convert to fraction form
    521,566.60/782,349.90 = 432,993.10/x
  3. Step 3: Cross multiply
    521,566.60x = 782,349.90 × 432,993.10
  4. Step 4: Simplify right side
    521,566.60x = 338,752,108,485.69
  5. Step 5: Solve for x
    x = 338,752,108,485.69/521,566.60
  6. Step 6: Final answer
    x = 649,489.65

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Half scale
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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.