Home / 908,434.53-1,253,668.06-521,320.77

Finding the Fourth Proportional to 908,434.53, 1,253,668.06 and 521,320.77

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Solution

The fourth proportional to 908,434.53, 1,253,668.06 and 521,320.77 is: 719,438.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,434.53 : 1,253,668.06 = 521,320.77 : x
  2. Step 2: Convert to fraction form
    908,434.53/1,253,668.06 = 521,320.77/x
  3. Step 3: Cross multiply
    908,434.53x = 1,253,668.06 × 521,320.77
  4. Step 4: Simplify right side
    908,434.53x = 653,563,198,363.61
  5. Step 5: Solve for x
    x = 653,563,198,363.61/908,434.53
  6. Step 6: Final answer
    x = 719,438.97

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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.