Home / 687,587.10-1,031,591.82-328,216.50

Finding the Fourth Proportional to 687,587.10, 1,031,591.82 and 328,216.50

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Solution

The fourth proportional to 687,587.10, 1,031,591.82 and 328,216.50 is: 492,425.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,587.10 : 1,031,591.82 = 328,216.50 : x
  2. Step 2: Convert to fraction form
    687,587.10/1,031,591.82 = 328,216.50/x
  3. Step 3: Cross multiply
    687,587.10x = 1,031,591.82 × 328,216.50
  4. Step 4: Simplify right side
    687,587.10x = 338,585,456,589.03
  5. Step 5: Solve for x
    x = 338,585,456,589.03/687,587.10
  6. Step 6: Final answer
    x = 492,425.55

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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.