Home / 489,031.20-674,890.92-274,160.88

Finding the Fourth Proportional to 489,031.20, 674,890.92 and 274,160.88

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Solution

The fourth proportional to 489,031.20, 674,890.92 and 274,160.88 is: 378,357.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,031.20 : 674,890.92 = 274,160.88 : x
  2. Step 2: Convert to fraction form
    489,031.20/674,890.92 = 274,160.88/x
  3. Step 3: Cross multiply
    489,031.20x = 674,890.92 × 274,160.88
  4. Step 4: Simplify right side
    489,031.20x = 185,028,688,531.21
  5. Step 5: Solve for x
    x = 185,028,688,531.21/489,031.20
  6. Step 6: Final answer
    x = 378,357.64

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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.