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Finding the Fourth Proportional to 521,347.70, 782,021.55 and 409,373.30

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Solution

The fourth proportional to 521,347.70, 782,021.55 and 409,373.30 is: 614,059.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,347.70 : 782,021.55 = 409,373.30 : x
  2. Step 2: Convert to fraction form
    521,347.70/782,021.55 = 409,373.30/x
  3. Step 3: Cross multiply
    521,347.70x = 782,021.55 × 409,373.30
  4. Step 4: Simplify right side
    521,347.70x = 320,138,742,594.62
  5. Step 5: Solve for x
    x = 320,138,742,594.62/521,347.70
  6. Step 6: Final answer
    x = 614,059.95

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Similar ratio
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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.