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Finding the Fourth Proportional to 10,805,695.89, 16,209,678.99 and 3,519,723.43

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Solution

The fourth proportional to 10,805,695.89, 16,209,678.99 and 3,519,723.43 is: 5,279,954.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,805,695.89 : 16,209,678.99 = 3,519,723.43 : x
  2. Step 2: Convert to fraction form
    10,805,695.89/16,209,678.99 = 3,519,723.43/x
  3. Step 3: Cross multiply
    10,805,695.89x = 16,209,678.99 × 3,519,723.43
  4. Step 4: Simplify right side
    10,805,695.89x = 57,053,586,933,881.74
  5. Step 5: Solve for x
    x = 57,053,586,933,881.74/10,805,695.89
  6. Step 6: Final answer
    x = 5,279,954.90

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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.