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Finding the Fourth Proportional to 8,643,305.80, 12,965,614.80 and 2,577,564.10

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Solution

The fourth proportional to 8,643,305.80, 12,965,614.80 and 2,577,564.10 is: 3,866,541.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,643,305.80 : 12,965,614.80 = 2,577,564.10 : x
  2. Step 2: Convert to fraction form
    8,643,305.80/12,965,614.80 = 2,577,564.10/x
  3. Step 3: Cross multiply
    8,643,305.80x = 12,965,614.80 × 2,577,564.10
  4. Step 4: Simplify right side
    8,643,305.80x = 33,419,703,242,908.68
  5. Step 5: Solve for x
    x = 33,419,703,242,908.68/8,643,305.80
  6. Step 6: Final answer
    x = 3,866,541.81

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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.