Home / 687,304.93-948,485.97-381,382.51

Finding the Fourth Proportional to 687,304.93, 948,485.97 and 381,382.51

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Solution

The fourth proportional to 687,304.93, 948,485.97 and 381,382.51 is: 526,310.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,304.93 : 948,485.97 = 381,382.51 : x
  2. Step 2: Convert to fraction form
    687,304.93/948,485.97 = 381,382.51/x
  3. Step 3: Cross multiply
    687,304.93x = 948,485.97 × 381,382.51
  4. Step 4: Simplify right side
    687,304.93x = 361,735,959,938.39
  5. Step 5: Solve for x
    x = 361,735,959,938.39/687,304.93
  6. Step 6: Final answer
    x = 526,310.73

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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.