Home / 669,948.60-1,002,849.30-388,630.20

Finding the Fourth Proportional to 669,948.60, 1,002,849.30 and 388,630.20

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Solution

The fourth proportional to 669,948.60, 1,002,849.30 and 388,630.20 is: 581,742.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,948.60 : 1,002,849.30 = 388,630.20 : x
  2. Step 2: Convert to fraction form
    669,948.60/1,002,849.30 = 388,630.20/x
  3. Step 3: Cross multiply
    669,948.60x = 1,002,849.30 × 388,630.20
  4. Step 4: Simplify right side
    669,948.60x = 389,737,524,028.86
  5. Step 5: Solve for x
    x = 389,737,524,028.86/669,948.60
  6. Step 6: Final answer
    x = 581,742.43

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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.