Home / 687,600.28-1,031,611.58-328,229.71

Finding the Fourth Proportional to 687,600.28, 1,031,611.58 and 328,229.71

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Solution

The fourth proportional to 687,600.28, 1,031,611.58 and 328,229.71 is: 492,445.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,600.28 : 1,031,611.58 = 328,229.71 : x
  2. Step 2: Convert to fraction form
    687,600.28/1,031,611.58 = 328,229.71/x
  3. Step 3: Cross multiply
    687,600.28x = 1,031,611.58 × 328,229.71
  4. Step 4: Simplify right side
    687,600.28x = 338,605,569,736.04
  5. Step 5: Solve for x
    x = 338,605,569,736.04/687,600.28
  6. Step 6: Final answer
    x = 492,445.36

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1.5x scale

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.