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Finding the Fourth Proportional to 521,721.60, 782,582.40 and 486,470.40

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Solution

The fourth proportional to 521,721.60, 782,582.40 and 486,470.40 is: 729,705.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,721.60 : 782,582.40 = 486,470.40 : x
  2. Step 2: Convert to fraction form
    521,721.60/782,582.40 = 486,470.40/x
  3. Step 3: Cross multiply
    521,721.60x = 782,582.40 × 486,470.40
  4. Step 4: Simplify right side
    521,721.60x = 380,703,173,160.96
  5. Step 5: Solve for x
    x = 380,703,173,160.96/521,721.60
  6. Step 6: Final answer
    x = 729,705.60

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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.