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Finding the Fourth Proportional to 6,976,162.64, 9,627,901.71 and 3,878,994.80

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Solution

The fourth proportional to 6,976,162.64, 9,627,901.71 and 3,878,994.80 is: 5,353,456.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,976,162.64 : 9,627,901.71 = 3,878,994.80 : x
  2. Step 2: Convert to fraction form
    6,976,162.64/9,627,901.71 = 3,878,994.80/x
  3. Step 3: Cross multiply
    6,976,162.64x = 9,627,901.71 × 3,878,994.80
  4. Step 4: Simplify right side
    6,976,162.64x = 37,346,580,668,001.11
  5. Step 5: Solve for x
    x = 37,346,580,668,001.11/6,976,162.64
  6. Step 6: Final answer
    x = 5,353,456.13

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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.