Home / 499,126.80-688,795.06-284,286.86

Finding the Fourth Proportional to 499,126.80, 688,795.06 and 284,286.86

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Solution

The fourth proportional to 499,126.80, 688,795.06 and 284,286.86 is: 392,315.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,126.80 : 688,795.06 = 284,286.86 : x
  2. Step 2: Convert to fraction form
    499,126.80/688,795.06 = 284,286.86/x
  3. Step 3: Cross multiply
    499,126.80x = 688,795.06 × 284,286.86
  4. Step 4: Simplify right side
    499,126.80x = 195,815,384,790.91
  5. Step 5: Solve for x
    x = 195,815,384,790.91/499,126.80
  6. Step 6: Final answer
    x = 392,315.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.