Home / 499,115.82-688,780.12-272,761.32

Finding the Fourth Proportional to 499,115.82, 688,780.12 and 272,761.32

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Solution

The fourth proportional to 499,115.82, 688,780.12 and 272,761.32 is: 376,410.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,115.82 : 688,780.12 = 272,761.32 : x
  2. Step 2: Convert to fraction form
    499,115.82/688,780.12 = 272,761.32/x
  3. Step 3: Cross multiply
    499,115.82x = 688,780.12 × 272,761.32
  4. Step 4: Simplify right side
    499,115.82x = 187,872,574,720.96
  5. Step 5: Solve for x
    x = 187,872,574,720.96/499,115.82
  6. Step 6: Final answer
    x = 376,410.78

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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.