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Finding the Fourth Proportional to 617,672.13, 925,301.54 and 425,512.65

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Solution

The fourth proportional to 617,672.13, 925,301.54 and 425,512.65 is: 637,437.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,672.13 : 925,301.54 = 425,512.65 : x
  2. Step 2: Convert to fraction form
    617,672.13/925,301.54 = 425,512.65/x
  3. Step 3: Cross multiply
    617,672.13x = 925,301.54 × 425,512.65
  4. Step 4: Simplify right side
    617,672.13x = 393,727,514,868.14
  5. Step 5: Solve for x
    x = 393,727,514,868.14/617,672.13
  6. Step 6: Final answer
    x = 637,437.72

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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.