Home / 687,033.20-948,111.50-381,129.62

Finding the Fourth Proportional to 687,033.20, 948,111.50 and 381,129.62

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Solution

The fourth proportional to 687,033.20, 948,111.50 and 381,129.62 is: 525,962.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,033.20 : 948,111.50 = 381,129.62 : x
  2. Step 2: Convert to fraction form
    687,033.20/948,111.50 = 381,129.62/x
  3. Step 3: Cross multiply
    687,033.20x = 948,111.50 × 381,129.62
  4. Step 4: Simplify right side
    687,033.20x = 361,353,375,712.63
  5. Step 5: Solve for x
    x = 361,353,375,712.63/687,033.20
  6. Step 6: Final answer
    x = 525,962.03

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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.