Home / 489,844.35-676,084.68-283,121.55

Finding the Fourth Proportional to 489,844.35, 676,084.68 and 283,121.55

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Solution

The fourth proportional to 489,844.35, 676,084.68 and 283,121.55 is: 390,765.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,844.35 : 676,084.68 = 283,121.55 : x
  2. Step 2: Convert to fraction form
    489,844.35/676,084.68 = 283,121.55/x
  3. Step 3: Cross multiply
    489,844.35x = 676,084.68 × 283,121.55
  4. Step 4: Simplify right side
    489,844.35x = 191,414,142,532.85
  5. Step 5: Solve for x
    x = 191,414,142,532.85/489,844.35
  6. Step 6: Final answer
    x = 390,765.23

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1.5x scale

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.