Home / 487,519.16-672,839.87-272,703.78

Finding the Fourth Proportional to 487,519.16, 672,839.87 and 272,703.78

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Solution

The fourth proportional to 487,519.16, 672,839.87 and 272,703.78 is: 376,366.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,519.16 : 672,839.87 = 272,703.78 : x
  2. Step 2: Convert to fraction form
    487,519.16/672,839.87 = 272,703.78/x
  3. Step 3: Cross multiply
    487,519.16x = 672,839.87 × 272,703.78
  4. Step 4: Simplify right side
    487,519.16x = 183,485,974,520.19
  5. Step 5: Solve for x
    x = 183,485,974,520.19/487,519.16
  6. Step 6: Final answer
    x = 376,366.70

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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.