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Finding the Fourth Proportional to 6,815,486.88, 9,405,398.16 and 3,759,657.12

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Solution

The fourth proportional to 6,815,486.88, 9,405,398.16 and 3,759,657.12 is: 5,188,341.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,815,486.88 : 9,405,398.16 = 3,759,657.12 : x
  2. Step 2: Convert to fraction form
    6,815,486.88/9,405,398.16 = 3,759,657.12/x
  3. Step 3: Cross multiply
    6,815,486.88x = 9,405,398.16 × 3,759,657.12
  4. Step 4: Simplify right side
    6,815,486.88x = 35,361,072,158,678.90
  5. Step 5: Solve for x
    x = 35,361,072,158,678.90/6,815,486.88
  6. Step 6: Final answer
    x = 5,188,341.31

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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.