Home / 687,144.93-948,373.82-381,319.55

Finding the Fourth Proportional to 687,144.93, 948,373.82 and 381,319.55

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Solution

The fourth proportional to 687,144.93, 948,373.82 and 381,319.55 is: 526,284.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,144.93 : 948,373.82 = 381,319.55 : x
  2. Step 2: Convert to fraction form
    687,144.93/948,373.82 = 381,319.55/x
  3. Step 3: Cross multiply
    687,144.93x = 948,373.82 × 381,319.55
  4. Step 4: Simplify right side
    687,144.93x = 361,633,471,625.71
  5. Step 5: Solve for x
    x = 361,633,471,625.71/687,144.93
  6. Step 6: Final answer
    x = 526,284.13

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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.