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Finding the Fourth Proportional to 521,580.60, 782,370.90 and 497,086.20

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Solution

The fourth proportional to 521,580.60, 782,370.90 and 497,086.20 is: 745,629.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,580.60 : 782,370.90 = 497,086.20 : x
  2. Step 2: Convert to fraction form
    521,580.60/782,370.90 = 497,086.20/x
  3. Step 3: Cross multiply
    521,580.60x = 782,370.90 × 497,086.20
  4. Step 4: Simplify right side
    521,580.60x = 388,905,777,671.58
  5. Step 5: Solve for x
    x = 388,905,777,671.58/521,580.60
  6. Step 6: Final answer
    x = 745,629.30

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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.