Home / 908,640.24-1,253,894.12-521,519.38

Finding the Fourth Proportional to 908,640.24, 1,253,894.12 and 521,519.38

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Solution

The fourth proportional to 908,640.24, 1,253,894.12 and 521,519.38 is: 719,679.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,640.24 : 1,253,894.12 = 521,519.38 : x
  2. Step 2: Convert to fraction form
    908,640.24/1,253,894.12 = 521,519.38/x
  3. Step 3: Cross multiply
    908,640.24x = 1,253,894.12 × 521,519.38
  4. Step 4: Simplify right side
    908,640.24x = 653,930,084,048.05
  5. Step 5: Solve for x
    x = 653,930,084,048.05/908,640.24
  6. Step 6: Final answer
    x = 719,679.86

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1.5x scale

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.