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Finding the Fourth Proportional to 6,461,774.38, 8,917,248.69 and 3,561,165.28

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Solution

The fourth proportional to 6,461,774.38, 8,917,248.69 and 3,561,165.28 is: 4,914,408.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,461,774.38 : 8,917,248.69 = 3,561,165.28 : x
  2. Step 2: Convert to fraction form
    6,461,774.38/8,917,248.69 = 3,561,165.28/x
  3. Step 3: Cross multiply
    6,461,774.38x = 8,917,248.69 × 3,561,165.28
  4. Step 4: Simplify right side
    6,461,774.38x = 31,755,796,405,660.36
  5. Step 5: Solve for x
    x = 31,755,796,405,660.36/6,461,774.38
  6. Step 6: Final answer
    x = 4,914,408.11

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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.