Home / 728,540.64-1,005,391.80-406,271.61

Finding the Fourth Proportional to 728,540.64, 1,005,391.80 and 406,271.61

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Solution

The fourth proportional to 728,540.64, 1,005,391.80 and 406,271.61 is: 560,658.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,540.64 : 1,005,391.80 = 406,271.61 : x
  2. Step 2: Convert to fraction form
    728,540.64/1,005,391.80 = 406,271.61/x
  3. Step 3: Cross multiply
    728,540.64x = 1,005,391.80 × 406,271.61
  4. Step 4: Simplify right side
    728,540.64x = 408,462,145,266.80
  5. Step 5: Solve for x
    x = 408,462,145,266.80/728,540.64
  6. Step 6: Final answer
    x = 560,658.01

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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.