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Finding the Fourth Proportional to 978,701.10, 1,468,051.65 and 876,057.90

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Solution

The fourth proportional to 978,701.10, 1,468,051.65 and 876,057.90 is: 1,314,086.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,701.10 : 1,468,051.65 = 876,057.90 : x
  2. Step 2: Convert to fraction form
    978,701.10/1,468,051.65 = 876,057.90/x
  3. Step 3: Cross multiply
    978,701.10x = 1,468,051.65 × 876,057.90
  4. Step 4: Simplify right side
    978,701.10x = 1,286,098,245,590.53
  5. Step 5: Solve for x
    x = 1,286,098,245,590.53/978,701.10
  6. Step 6: Final answer
    x = 1,314,086.85

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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.