Home / 687,591.59-1,031,598.55-328,221.02

Finding the Fourth Proportional to 687,591.59, 1,031,598.55 and 328,221.02

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Solution

The fourth proportional to 687,591.59, 1,031,598.55 and 328,221.02 is: 492,432.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,591.59 : 1,031,598.55 = 328,221.02 : x
  2. Step 2: Convert to fraction form
    687,591.59/1,031,598.55 = 328,221.02/x
  3. Step 3: Cross multiply
    687,591.59x = 1,031,598.55 × 328,221.02
  4. Step 4: Simplify right side
    687,591.59x = 338,592,330,069.97
  5. Step 5: Solve for x
    x = 338,592,330,069.97/687,591.59
  6. Step 6: Final answer
    x = 492,432.33

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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.