Home / 908,636.74-1,253,889.30-521,515.88

Finding the Fourth Proportional to 908,636.74, 1,253,889.30 and 521,515.88

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Solution

The fourth proportional to 908,636.74, 1,253,889.30 and 521,515.88 is: 719,675.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,636.74 : 1,253,889.30 = 521,515.88 : x
  2. Step 2: Convert to fraction form
    908,636.74/1,253,889.30 = 521,515.88/x
  3. Step 3: Cross multiply
    908,636.74x = 1,253,889.30 × 521,515.88
  4. Step 4: Simplify right side
    908,636.74x = 653,923,181,712.08
  5. Step 5: Solve for x
    x = 653,923,181,712.08/908,636.74
  6. Step 6: Final answer
    x = 719,675.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.