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Finding the Fourth Proportional to 8,704,740.80, 13,061,402.40 and 3,915,819.20

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Solution

The fourth proportional to 8,704,740.80, 13,061,402.40 and 3,915,819.20 is: 5,875,659.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,704,740.80 : 13,061,402.40 = 3,915,819.20 : x
  2. Step 2: Convert to fraction form
    8,704,740.80/13,061,402.40 = 3,915,819.20/x
  3. Step 3: Cross multiply
    8,704,740.80x = 13,061,402.40 × 3,915,819.20
  4. Step 4: Simplify right side
    8,704,740.80x = 51,146,090,296,846.09
  5. Step 5: Solve for x
    x = 51,146,090,296,846.09/8,704,740.80
  6. Step 6: Final answer
    x = 5,875,659.19

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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.