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Finding the Fourth Proportional to 558,906.40, 838,915.80 and 259,454.80

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Solution

The fourth proportional to 558,906.40, 838,915.80 and 259,454.80 is: 389,440.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,906.40 : 838,915.80 = 259,454.80 : x
  2. Step 2: Convert to fraction form
    558,906.40/838,915.80 = 259,454.80/x
  3. Step 3: Cross multiply
    558,906.40x = 838,915.80 × 259,454.80
  4. Step 4: Simplify right side
    558,906.40x = 217,660,731,105.84
  5. Step 5: Solve for x
    x = 217,660,731,105.84/558,906.40
  6. Step 6: Final answer
    x = 389,440.40

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.