Home / 726,601.59-1,002,732.21-420,649.71

Finding the Fourth Proportional to 726,601.59, 1,002,732.21 and 420,649.71

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Solution

The fourth proportional to 726,601.59, 1,002,732.21 and 420,649.71 is: 580,509.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,601.59 : 1,002,732.21 = 420,649.71 : x
  2. Step 2: Convert to fraction form
    726,601.59/1,002,732.21 = 420,649.71/x
  3. Step 3: Cross multiply
    726,601.59x = 1,002,732.21 × 420,649.71
  4. Step 4: Simplify right side
    726,601.59x = 421,799,009,583.91
  5. Step 5: Solve for x
    x = 421,799,009,583.91/726,601.59
  6. Step 6: Final answer
    x = 580,509.34

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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.