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Finding the Fourth Proportional to 8,474,915.80, 12,712,373.70 and 2,793,770.20

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Solution

The fourth proportional to 8,474,915.80, 12,712,373.70 and 2,793,770.20 is: 4,190,655.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,474,915.80 : 12,712,373.70 = 2,793,770.20 : x
  2. Step 2: Convert to fraction form
    8,474,915.80/12,712,373.70 = 2,793,770.20/x
  3. Step 3: Cross multiply
    8,474,915.80x = 12,712,373.70 × 2,793,770.20
  4. Step 4: Simplify right side
    8,474,915.80x = 35,515,450,814,323.74
  5. Step 5: Solve for x
    x = 35,515,450,814,323.74/8,474,915.80
  6. Step 6: Final answer
    x = 4,190,655.30

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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.