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Finding the Fourth Proportional to 753,993.33, 1,040,164 and 668,040

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Solution

The fourth proportional to 753,993.33, 1,040,164 and 668,040 is: 921,587.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,993.33 : 1,040,164 = 668,040 : x
  2. Step 2: Convert to fraction form
    753,993.33/1,040,164 = 668,040/x
  3. Step 3: Cross multiply
    753,993.33x = 1,040,164 × 668,040
  4. Step 4: Simplify right side
    753,993.33x = 694,871,158,560
  5. Step 5: Solve for x
    x = 694,871,158,560/753,993.33
  6. Step 6: Final answer
    x = 921,587.94

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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.