Home / 452,741.15-679,109.28-115,781.25

Finding the Fourth Proportional to 452,741.15, 679,109.28 and 115,781.25

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Solution

The fourth proportional to 452,741.15, 679,109.28 and 115,781.25 is: 173,671.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,741.15 : 679,109.28 = 115,781.25 : x
  2. Step 2: Convert to fraction form
    452,741.15/679,109.28 = 115,781.25/x
  3. Step 3: Cross multiply
    452,741.15x = 679,109.28 × 115,781.25
  4. Step 4: Simplify right side
    452,741.15x = 78,628,121,325
  5. Step 5: Solve for x
    x = 78,628,121,325/452,741.15
  6. Step 6: Final answer
    x = 173,671.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.