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Finding the Fourth Proportional to 521,567.60, 782,351.40 and 432,994.10

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Solution

The fourth proportional to 521,567.60, 782,351.40 and 432,994.10 is: 649,491.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,567.60 : 782,351.40 = 432,994.10 : x
  2. Step 2: Convert to fraction form
    521,567.60/782,351.40 = 432,994.10/x
  3. Step 3: Cross multiply
    521,567.60x = 782,351.40 × 432,994.10
  4. Step 4: Simplify right side
    521,567.60x = 338,753,540,326.74
  5. Step 5: Solve for x
    x = 338,753,540,326.74/521,567.60
  6. Step 6: Final answer
    x = 649,491.15

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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.