Home / 853,079.88-1,278,710.46-642,065.16

Finding the Fourth Proportional to 853,079.88, 1,278,710.46 and 642,065.16

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Solution

The fourth proportional to 853,079.88, 1,278,710.46 and 642,065.16 is: 962,413.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,079.88 : 1,278,710.46 = 642,065.16 : x
  2. Step 2: Convert to fraction form
    853,079.88/1,278,710.46 = 642,065.16/x
  3. Step 3: Cross multiply
    853,079.88x = 1,278,710.46 × 642,065.16
  4. Step 4: Simplify right side
    853,079.88x = 821,015,436,093.57
  5. Step 5: Solve for x
    x = 821,015,436,093.57/853,079.88
  6. Step 6: Final answer
    x = 962,413.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.