Home / 8,455,243.20-12,682,864.80-5,431,934.40

Finding the Fourth Proportional to 8,455,243.20, 12,682,864.80 and 5,431,934.40

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Solution

The fourth proportional to 8,455,243.20, 12,682,864.80 and 5,431,934.40 is: 8,147,901.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,455,243.20 : 12,682,864.80 = 5,431,934.40 : x
  2. Step 2: Convert to fraction form
    8,455,243.20/12,682,864.80 = 5,431,934.40/x
  3. Step 3: Cross multiply
    8,455,243.20x = 12,682,864.80 × 5,431,934.40
  4. Step 4: Simplify right side
    8,455,243.20x = 68,892,489,597,669.12
  5. Step 5: Solve for x
    x = 68,892,489,597,669.12/8,455,243.20
  6. Step 6: Final answer
    x = 8,147,901.60

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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.