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Finding the Fourth Proportional to 978,555.95, 1,468,207.56 and 379,937.42

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Solution

The fourth proportional to 978,555.95, 1,468,207.56 and 379,937.42 is: 570,051.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,555.95 : 1,468,207.56 = 379,937.42 : x
  2. Step 2: Convert to fraction form
    978,555.95/1,468,207.56 = 379,937.42/x
  3. Step 3: Cross multiply
    978,555.95x = 1,468,207.56 × 379,937.42
  4. Step 4: Simplify right side
    978,555.95x = 557,826,992,370.90
  5. Step 5: Solve for x
    x = 557,826,992,370.90/978,555.95
  6. Step 6: Final answer
    x = 570,051.20

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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.