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Finding the Fourth Proportional to 520,068.55, 780,102.83 and 488,964.55

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Solution

The fourth proportional to 520,068.55, 780,102.83 and 488,964.55 is: 733,446.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,068.55 : 780,102.83 = 488,964.55 : x
  2. Step 2: Convert to fraction form
    520,068.55/780,102.83 = 488,964.55/x
  3. Step 3: Cross multiply
    520,068.55x = 780,102.83 × 488,964.55
  4. Step 4: Simplify right side
    520,068.55x = 381,442,629,224.68
  5. Step 5: Solve for x
    x = 381,442,629,224.68/520,068.55
  6. Step 6: Final answer
    x = 733,446.83

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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.