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Finding the Fourth Proportional to 6,321,478.82, 8,721,505.22 and 4,115,337.08

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Solution

The fourth proportional to 6,321,478.82, 8,721,505.22 and 4,115,337.08 is: 5,677,774.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,321,478.82 : 8,721,505.22 = 4,115,337.08 : x
  2. Step 2: Convert to fraction form
    6,321,478.82/8,721,505.22 = 4,115,337.08/x
  3. Step 3: Cross multiply
    6,321,478.82x = 8,721,505.22 × 4,115,337.08
  4. Step 4: Simplify right side
    6,321,478.82x = 35,891,933,761,095.34
  5. Step 5: Solve for x
    x = 35,891,933,761,095.34/6,321,478.82
  6. Step 6: Final answer
    x = 5,677,774.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.