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Finding the Fourth Proportional to 652,301.70, 978,452.55 and 439,725.30

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Solution

The fourth proportional to 652,301.70, 978,452.55 and 439,725.30 is: 659,587.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,301.70 : 978,452.55 = 439,725.30 : x
  2. Step 2: Convert to fraction form
    652,301.70/978,452.55 = 439,725.30/x
  3. Step 3: Cross multiply
    652,301.70x = 978,452.55 × 439,725.30
  4. Step 4: Simplify right side
    652,301.70x = 430,250,341,084.52
  5. Step 5: Solve for x
    x = 430,250,341,084.52/652,301.70
  6. Step 6: Final answer
    x = 659,587.95

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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.