Home / 791,404.89-1,187,465.46-311,500.55

Finding the Fourth Proportional to 791,404.89, 1,187,465.46 and 311,500.55

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Solution

The fourth proportional to 791,404.89, 1,187,465.46 and 311,500.55 is: 467,391.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    791,404.89 : 1,187,465.46 = 311,500.55 : x
  2. Step 2: Convert to fraction form
    791,404.89/1,187,465.46 = 311,500.55/x
  3. Step 3: Cross multiply
    791,404.89x = 1,187,465.46 × 311,500.55
  4. Step 4: Simplify right side
    791,404.89x = 369,896,140,769.24
  5. Step 5: Solve for x
    x = 369,896,140,769.24/791,404.89
  6. Step 6: Final answer
    x = 467,391.78

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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.