Home / 728,576.92-1,005,440.55-406,307.42

Finding the Fourth Proportional to 728,576.92, 1,005,440.55 and 406,307.42

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Solution

The fourth proportional to 728,576.92, 1,005,440.55 and 406,307.42 is: 560,706.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,576.92 : 1,005,440.55 = 406,307.42 : x
  2. Step 2: Convert to fraction form
    728,576.92/1,005,440.55 = 406,307.42/x
  3. Step 3: Cross multiply
    728,576.92x = 1,005,440.55 × 406,307.42
  4. Step 4: Simplify right side
    728,576.92x = 408,517,953,053.43
  5. Step 5: Solve for x
    x = 408,517,953,053.43/728,576.92
  6. Step 6: Final answer
    x = 560,706.69

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Double scale
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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.