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Finding the Fourth Proportional to 617,674.13, 925,304.54 and 425,514.65

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Solution

The fourth proportional to 617,674.13, 925,304.54 and 425,514.65 is: 637,440.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,674.13 : 925,304.54 = 425,514.65 : x
  2. Step 2: Convert to fraction form
    617,674.13/925,304.54 = 425,514.65/x
  3. Step 3: Cross multiply
    617,674.13x = 925,304.54 × 425,514.65
  4. Step 4: Simplify right side
    617,674.13x = 393,730,635,353.94
  5. Step 5: Solve for x
    x = 393,730,635,353.94/617,674.13
  6. Step 6: Final answer
    x = 637,440.71

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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.