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Finding the Fourth Proportional to 7,278,952.61, 10,919,978.96 and 2,161,397.22

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Solution

The fourth proportional to 7,278,952.61, 10,919,978.96 and 2,161,397.22 is: 3,242,556.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,278,952.61 : 10,919,978.96 = 2,161,397.22 : x
  2. Step 2: Convert to fraction form
    7,278,952.61/10,919,978.96 = 2,161,397.22/x
  3. Step 3: Cross multiply
    7,278,952.61x = 10,919,978.96 × 2,161,397.22
  4. Step 4: Simplify right side
    7,278,952.61x = 23,602,412,114,845.59
  5. Step 5: Solve for x
    x = 23,602,412,114,845.59/7,278,952.61
  6. Step 6: Final answer
    x = 3,242,556.09

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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.