Home / 728,618.46-1,005,491.52-406,328.91

Finding the Fourth Proportional to 728,618.46, 1,005,491.52 and 406,328.91

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Solution

The fourth proportional to 728,618.46, 1,005,491.52 and 406,328.91 is: 560,732.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,618.46 : 1,005,491.52 = 406,328.91 : x
  2. Step 2: Convert to fraction form
    728,618.46/1,005,491.52 = 406,328.91/x
  3. Step 3: Cross multiply
    728,618.46x = 1,005,491.52 × 406,328.91
  4. Step 4: Simplify right side
    728,618.46x = 408,560,273,335.84
  5. Step 5: Solve for x
    x = 408,560,273,335.84/728,618.46
  6. Step 6: Final answer
    x = 560,732.81

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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.