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Finding the Fourth Proportional to 1,202,417, 1,659,387.62 and 665,873

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Solution

The fourth proportional to 1,202,417, 1,659,387.62 and 665,873 is: 918,933.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,202,417 : 1,659,387.62 = 665,873 : x
  2. Step 2: Convert to fraction form
    1,202,417/1,659,387.62 = 665,873/x
  3. Step 3: Cross multiply
    1,202,417x = 1,659,387.62 × 665,873
  4. Step 4: Simplify right side
    1,202,417x = 1,104,941,412,692.26
  5. Step 5: Solve for x
    x = 1,104,941,412,692.26/1,202,417
  6. Step 6: Final answer
    x = 918,933.63

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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.