Home / 487,435.53-672,679.40-272,575.11

Finding the Fourth Proportional to 487,435.53, 672,679.40 and 272,575.11

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Solution

The fourth proportional to 487,435.53, 672,679.40 and 272,575.11 is: 376,163.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,435.53 : 672,679.40 = 272,575.11 : x
  2. Step 2: Convert to fraction form
    487,435.53/672,679.40 = 272,575.11/x
  3. Step 3: Cross multiply
    487,435.53x = 672,679.40 × 272,575.11
  4. Step 4: Simplify right side
    487,435.53x = 183,355,661,449.73
  5. Step 5: Solve for x
    x = 183,355,661,449.73/487,435.53
  6. Step 6: Final answer
    x = 376,163.92

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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.