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Finding the Fourth Proportional to 7,306,168.80, 10,959,944.40 and 1,987,384.80

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Solution

The fourth proportional to 7,306,168.80, 10,959,944.40 and 1,987,384.80 is: 2,981,265.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,306,168.80 : 10,959,944.40 = 1,987,384.80 : x
  2. Step 2: Convert to fraction form
    7,306,168.80/10,959,944.40 = 1,987,384.80/x
  3. Step 3: Cross multiply
    7,306,168.80x = 10,959,944.40 × 1,987,384.80
  4. Step 4: Simplify right side
    7,306,168.80x = 21,781,626,909,405.12
  5. Step 5: Solve for x
    x = 21,781,626,909,405.12/7,306,168.80
  6. Step 6: Final answer
    x = 2,981,265.22

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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.