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Finding the Fourth Proportional to 574,286.40, 859,874.40 and 449,870.40

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Solution

The fourth proportional to 574,286.40, 859,874.40 and 449,870.40 is: 673,587.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    574,286.40 : 859,874.40 = 449,870.40 : x
  2. Step 2: Convert to fraction form
    574,286.40/859,874.40 = 449,870.40/x
  3. Step 3: Cross multiply
    574,286.40x = 859,874.40 × 449,870.40
  4. Step 4: Simplify right side
    574,286.40x = 386,832,040,277.76
  5. Step 5: Solve for x
    x = 386,832,040,277.76/574,286.40
  6. Step 6: Final answer
    x = 673,587.33

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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.