Home / 723,562.89-1,085,994.85-386,891.32

Finding the Fourth Proportional to 723,562.89, 1,085,994.85 and 386,891.32

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Solution

The fourth proportional to 723,562.89, 1,085,994.85 and 386,891.32 is: 580,684.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,562.89 : 1,085,994.85 = 386,891.32 : x
  2. Step 2: Convert to fraction form
    723,562.89/1,085,994.85 = 386,891.32/x
  3. Step 3: Cross multiply
    723,562.89x = 1,085,994.85 × 386,891.32
  4. Step 4: Simplify right side
    723,562.89x = 420,161,981,029.70
  5. Step 5: Solve for x
    x = 420,161,981,029.70/723,562.89
  6. Step 6: Final answer
    x = 580,684.81

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.