Home / 815,737.32-1,223,781.08-342,149.76

Finding the Fourth Proportional to 815,737.32, 1,223,781.08 and 342,149.76

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Solution

The fourth proportional to 815,737.32, 1,223,781.08 and 342,149.76 is: 513,298.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,737.32 : 1,223,781.08 = 342,149.76 : x
  2. Step 2: Convert to fraction form
    815,737.32/1,223,781.08 = 342,149.76/x
  3. Step 3: Cross multiply
    815,737.32x = 1,223,781.08 × 342,149.76
  4. Step 4: Simplify right side
    815,737.32x = 418,716,401,103.79
  5. Step 5: Solve for x
    x = 418,716,401,103.79/815,737.32
  6. Step 6: Final answer
    x = 513,298.08

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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.