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Finding the Fourth Proportional to 8,651,693.80, 12,977,540.70 and 7,245,015.40

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Solution

The fourth proportional to 8,651,693.80, 12,977,540.70 and 7,245,015.40 is: 10,867,523.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,651,693.80 : 12,977,540.70 = 7,245,015.40 : x
  2. Step 2: Convert to fraction form
    8,651,693.80/12,977,540.70 = 7,245,015.40/x
  3. Step 3: Cross multiply
    8,651,693.80x = 12,977,540.70 × 7,245,015.40
  4. Step 4: Simplify right side
    8,651,693.80x = 94,022,482,225,626.78
  5. Step 5: Solve for x
    x = 94,022,482,225,626.78/8,651,693.80
  6. Step 6: Final answer
    x = 10,867,523.10

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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.