Home / 729,217.12-1,006,317.76-406,923.78

Finding the Fourth Proportional to 729,217.12, 1,006,317.76 and 406,923.78

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Solution

The fourth proportional to 729,217.12, 1,006,317.76 and 406,923.78 is: 561,553.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,217.12 : 1,006,317.76 = 406,923.78 : x
  2. Step 2: Convert to fraction form
    729,217.12/1,006,317.76 = 406,923.78/x
  3. Step 3: Cross multiply
    729,217.12x = 1,006,317.76 × 406,923.78
  4. Step 4: Simplify right side
    729,217.12x = 409,494,626,780.33
  5. Step 5: Solve for x
    x = 409,494,626,780.33/729,217.12
  6. Step 6: Final answer
    x = 561,553.78

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Double scale
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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.