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Finding the Fourth Proportional to 1,008,325, 1,391,517.78 and 555,645.16

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Solution

The fourth proportional to 1,008,325, 1,391,517.78 and 555,645.16 is: 766,806.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,008,325 : 1,391,517.78 = 555,645.16 : x
  2. Step 2: Convert to fraction form
    1,008,325/1,391,517.78 = 555,645.16/x
  3. Step 3: Cross multiply
    1,008,325x = 1,391,517.78 × 555,645.16
  4. Step 4: Simplify right side
    1,008,325x = 773,190,119,510.95
  5. Step 5: Solve for x
    x = 773,190,119,510.95/1,008,325
  6. Step 6: Final answer
    x = 766,806.46

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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.