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Finding the Fourth Proportional to 482,964.20, 724,446.30 and 363,991.40

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Solution

The fourth proportional to 482,964.20, 724,446.30 and 363,991.40 is: 545,987.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,964.20 : 724,446.30 = 363,991.40 : x
  2. Step 2: Convert to fraction form
    482,964.20/724,446.30 = 363,991.40/x
  3. Step 3: Cross multiply
    482,964.20x = 724,446.30 × 363,991.40
  4. Step 4: Simplify right side
    482,964.20x = 263,692,222,961.82
  5. Step 5: Solve for x
    x = 263,692,222,961.82/482,964.20
  6. Step 6: Final answer
    x = 545,987.10

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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.