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Finding the Fourth Proportional to 659,983.49, 910,645.48 and 401,687.43

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Solution

The fourth proportional to 659,983.49, 910,645.48 and 401,687.43 is: 554,248.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,983.49 : 910,645.48 = 401,687.43 : x
  2. Step 2: Convert to fraction form
    659,983.49/910,645.48 = 401,687.43/x
  3. Step 3: Cross multiply
    659,983.49x = 910,645.48 × 401,687.43
  4. Step 4: Simplify right side
    659,983.49x = 365,794,842,502.32
  5. Step 5: Solve for x
    x = 365,794,842,502.32/659,983.49
  6. Step 6: Final answer
    x = 554,248.47

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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.