Home / 487,297.10-672,531.78-272,449.88

Finding the Fourth Proportional to 487,297.10, 672,531.78 and 272,449.88

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Solution

The fourth proportional to 487,297.10, 672,531.78 and 272,449.88 is: 376,015.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,297.10 : 672,531.78 = 272,449.88 : x
  2. Step 2: Convert to fraction form
    487,297.10/672,531.78 = 272,449.88/x
  3. Step 3: Cross multiply
    487,297.10x = 672,531.78 × 272,449.88
  4. Step 4: Simplify right side
    487,297.10x = 183,231,202,757.19
  5. Step 5: Solve for x
    x = 183,231,202,757.19/487,297.10
  6. Step 6: Final answer
    x = 376,015.38

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1.5x scale

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.