Home / 8,145,425.40-12,218,138.10-6,453,367.80

Finding the Fourth Proportional to 8,145,425.40, 12,218,138.10 and 6,453,367.80

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Solution

The fourth proportional to 8,145,425.40, 12,218,138.10 and 6,453,367.80 is: 9,680,051.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,145,425.40 : 12,218,138.10 = 6,453,367.80 : x
  2. Step 2: Convert to fraction form
    8,145,425.40/12,218,138.10 = 6,453,367.80/x
  3. Step 3: Cross multiply
    8,145,425.40x = 12,218,138.10 × 6,453,367.80
  4. Step 4: Simplify right side
    8,145,425.40x = 78,848,138,990,493.17
  5. Step 5: Solve for x
    x = 78,848,138,990,493.17/8,145,425.40
  6. Step 6: Final answer
    x = 9,680,051.70

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Double scale
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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.