Home / 693,687.20-1,040,108.40-272,458.40

Finding the Fourth Proportional to 693,687.20, 1,040,108.40 and 272,458.40

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Solution

The fourth proportional to 693,687.20, 1,040,108.40 and 272,458.40 is: 408,521.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,687.20 : 1,040,108.40 = 272,458.40 : x
  2. Step 2: Convert to fraction form
    693,687.20/1,040,108.40 = 272,458.40/x
  3. Step 3: Cross multiply
    693,687.20x = 1,040,108.40 × 272,458.40
  4. Step 4: Simplify right side
    693,687.20x = 283,386,270,490.56
  5. Step 5: Solve for x
    x = 283,386,270,490.56/693,687.20
  6. Step 6: Final answer
    x = 408,521.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.