Home / 908,434.78-1,253,668.41-521,321.02

Finding the Fourth Proportional to 908,434.78, 1,253,668.41 and 521,321.02

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Solution

The fourth proportional to 908,434.78, 1,253,668.41 and 521,321.02 is: 719,439.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,434.78 : 1,253,668.41 = 521,321.02 : x
  2. Step 2: Convert to fraction form
    908,434.78/1,253,668.41 = 521,321.02/x
  3. Step 3: Cross multiply
    908,434.78x = 1,253,668.41 × 521,321.02
  4. Step 4: Simplify right side
    908,434.78x = 653,563,691,108.81
  5. Step 5: Solve for x
    x = 653,563,691,108.81/908,434.78
  6. Step 6: Final answer
    x = 719,439.31

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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.