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Finding the Fourth Proportional to 8,480,839.68, 12,718,563.84 and 2,800,005.12

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Solution

The fourth proportional to 8,480,839.68, 12,718,563.84 and 2,800,005.12 is: 4,199,117.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,480,839.68 : 12,718,563.84 = 2,800,005.12 : x
  2. Step 2: Convert to fraction form
    8,480,839.68/12,718,563.84 = 2,800,005.12/x
  3. Step 3: Cross multiply
    8,480,839.68x = 12,718,563.84 × 2,800,005.12
  4. Step 4: Simplify right side
    8,480,839.68x = 35,612,043,871,046.86
  5. Step 5: Solve for x
    x = 35,612,043,871,046.86/8,480,839.68
  6. Step 6: Final answer
    x = 4,199,117.68

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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.