Home / 876,279.40-1,208,982.18-489,031.90

Finding the Fourth Proportional to 876,279.40, 1,208,982.18 and 489,031.90

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Solution

The fourth proportional to 876,279.40, 1,208,982.18 and 489,031.90 is: 674,705.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,279.40 : 1,208,982.18 = 489,031.90 : x
  2. Step 2: Convert to fraction form
    876,279.40/1,208,982.18 = 489,031.90/x
  3. Step 3: Cross multiply
    876,279.40x = 1,208,982.18 × 489,031.90
  4. Step 4: Simplify right side
    876,279.40x = 591,230,852,551.54
  5. Step 5: Solve for x
    x = 591,230,852,551.54/876,279.40
  6. Step 6: Final answer
    x = 674,705.87

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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.