Home / 687,734.40-1,031,978.16-267,026.88

Finding the Fourth Proportional to 687,734.40, 1,031,978.16 and 267,026.88

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Solution

The fourth proportional to 687,734.40, 1,031,978.16 and 267,026.88 is: 400,686.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,734.40 : 1,031,978.16 = 267,026.88 : x
  2. Step 2: Convert to fraction form
    687,734.40/1,031,978.16 = 267,026.88/x
  3. Step 3: Cross multiply
    687,734.40x = 1,031,978.16 × 267,026.88
  4. Step 4: Simplify right side
    687,734.40x = 275,565,908,292.94
  5. Step 5: Solve for x
    x = 275,565,908,292.94/687,734.40
  6. Step 6: Final answer
    x = 400,686.53

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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.