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Finding the Fourth Proportional to 1,991,799.04, 2,748,720 and 1,086,413.44

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Solution

The fourth proportional to 1,991,799.04, 2,748,720 and 1,086,413.44 is: 1,499,270.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991,799.04 : 2,748,720 = 1,086,413.44 : x
  2. Step 2: Convert to fraction form
    1,991,799.04/2,748,720 = 1,086,413.44/x
  3. Step 3: Cross multiply
    1,991,799.04x = 2,748,720 × 1,086,413.44
  4. Step 4: Simplify right side
    1,991,799.04x = 2,986,246,350,796.80
  5. Step 5: Solve for x
    x = 2,986,246,350,796.80/1,991,799.04
  6. Step 6: Final answer
    x = 1,499,270.91

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1.5x scale

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.