Home / 729,213.15-1,005,909.78-427,348.83

Finding the Fourth Proportional to 729,213.15, 1,005,909.78 and 427,348.83

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Solution

The fourth proportional to 729,213.15, 1,005,909.78 and 427,348.83 is: 589,504.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,213.15 : 1,005,909.78 = 427,348.83 : x
  2. Step 2: Convert to fraction form
    729,213.15/1,005,909.78 = 427,348.83/x
  3. Step 3: Cross multiply
    729,213.15x = 1,005,909.78 × 427,348.83
  4. Step 4: Simplify right side
    729,213.15x = 429,874,367,568.56
  5. Step 5: Solve for x
    x = 429,874,367,568.56/729,213.15
  6. Step 6: Final answer
    x = 589,504.41

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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.