Home / 819,863.68-1,131,413.85-457,311.02

Finding the Fourth Proportional to 819,863.68, 1,131,413.85 and 457,311.02

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Solution

The fourth proportional to 819,863.68, 1,131,413.85 and 457,311.02 is: 631,090.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,863.68 : 1,131,413.85 = 457,311.02 : x
  2. Step 2: Convert to fraction form
    819,863.68/1,131,413.85 = 457,311.02/x
  3. Step 3: Cross multiply
    819,863.68x = 1,131,413.85 × 457,311.02
  4. Step 4: Simplify right side
    819,863.68x = 517,408,016,128.56
  5. Step 5: Solve for x
    x = 517,408,016,128.56/819,863.68
  6. Step 6: Final answer
    x = 631,090.30

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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.