Home / 805,101.78-1,207,186.10-331,251.78

Finding the Fourth Proportional to 805,101.78, 1,207,186.10 and 331,251.78

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Solution

The fourth proportional to 805,101.78, 1,207,186.10 and 331,251.78 is: 496,685.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,101.78 : 1,207,186.10 = 331,251.78 : x
  2. Step 2: Convert to fraction form
    805,101.78/1,207,186.10 = 331,251.78/x
  3. Step 3: Cross multiply
    805,101.78x = 1,207,186.10 × 331,251.78
  4. Step 4: Simplify right side
    805,101.78x = 399,882,544,416.26
  5. Step 5: Solve for x
    x = 399,882,544,416.26/805,101.78
  6. Step 6: Final answer
    x = 496,685.70

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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.