Home / 728,621.46-1,005,495.66-406,331.92

Finding the Fourth Proportional to 728,621.46, 1,005,495.66 and 406,331.92

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Solution

The fourth proportional to 728,621.46, 1,005,495.66 and 406,331.92 is: 560,736.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,621.46 : 1,005,495.66 = 406,331.92 : x
  2. Step 2: Convert to fraction form
    728,621.46/1,005,495.66 = 406,331.92/x
  3. Step 3: Cross multiply
    728,621.46x = 1,005,495.66 × 406,331.92
  4. Step 4: Simplify right side
    728,621.46x = 408,564,982,079.47
  5. Step 5: Solve for x
    x = 408,564,982,079.47/728,621.46
  6. Step 6: Final answer
    x = 560,736.96

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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.