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Finding the Fourth Proportional to 521,582.69, 782,374.04 and 284,796.20

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Solution

The fourth proportional to 521,582.69, 782,374.04 and 284,796.20 is: 427,194.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,582.69 : 782,374.04 = 284,796.20 : x
  2. Step 2: Convert to fraction form
    521,582.69/782,374.04 = 284,796.20/x
  3. Step 3: Cross multiply
    521,582.69x = 782,374.04 × 284,796.20
  4. Step 4: Simplify right side
    521,582.69x = 222,817,155,170.59
  5. Step 5: Solve for x
    x = 222,817,155,170.59/521,582.69
  6. Step 6: Final answer
    x = 427,194.30

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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.