Home / 687,479.05-948,706.81-381,537.66

Finding the Fourth Proportional to 687,479.05, 948,706.81 and 381,537.66

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Solution

The fourth proportional to 687,479.05, 948,706.81 and 381,537.66 is: 526,514.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,479.05 : 948,706.81 = 381,537.66 : x
  2. Step 2: Convert to fraction form
    687,479.05/948,706.81 = 381,537.66/x
  3. Step 3: Cross multiply
    687,479.05x = 948,706.81 × 381,537.66
  4. Step 4: Simplify right side
    687,479.05x = 361,967,372,987.85
  5. Step 5: Solve for x
    x = 361,967,372,987.85/687,479.05
  6. Step 6: Final answer
    x = 526,514.05

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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.