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Finding the Fourth Proportional to 659,999.97, 910,669.91 and 401,807.61

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Solution

The fourth proportional to 659,999.97, 910,669.91 and 401,807.61 is: 554,415.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,999.97 : 910,669.91 = 401,807.61 : x
  2. Step 2: Convert to fraction form
    659,999.97/910,669.91 = 401,807.61/x
  3. Step 3: Cross multiply
    659,999.97x = 910,669.91 × 401,807.61
  4. Step 4: Simplify right side
    659,999.97x = 365,914,098,026.98
  5. Step 5: Solve for x
    x = 365,914,098,026.98/659,999.97
  6. Step 6: Final answer
    x = 554,415.33

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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.