Home / 806,413.20-1,207,870.20-666,445.20

Finding the Fourth Proportional to 806,413.20, 1,207,870.20 and 666,445.20

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Solution

The fourth proportional to 806,413.20, 1,207,870.20 and 666,445.20 is: 998,221.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,413.20 : 1,207,870.20 = 666,445.20 : x
  2. Step 2: Convert to fraction form
    806,413.20/1,207,870.20 = 666,445.20/x
  3. Step 3: Cross multiply
    806,413.20x = 1,207,870.20 × 666,445.20
  4. Step 4: Simplify right side
    806,413.20x = 804,979,297,013.04
  5. Step 5: Solve for x
    x = 804,979,297,013.04/806,413.20
  6. Step 6: Final answer
    x = 998,221.88

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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.