Home / 729,434.12-1,007,081.40-500,375.12

Finding the Fourth Proportional to 729,434.12, 1,007,081.40 and 500,375.12

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Solution

The fourth proportional to 729,434.12, 1,007,081.40 and 500,375.12 is: 690,834.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,434.12 : 1,007,081.40 = 500,375.12 : x
  2. Step 2: Convert to fraction form
    729,434.12/1,007,081.40 = 500,375.12/x
  3. Step 3: Cross multiply
    729,434.12x = 1,007,081.40 × 500,375.12
  4. Step 4: Simplify right side
    729,434.12x = 503,918,476,374.77
  5. Step 5: Solve for x
    x = 503,918,476,374.77/729,434.12
  6. Step 6: Final answer
    x = 690,834.80

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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.