Home / 1,991,344.40-2,986,627.80-661,648.40

Finding the Fourth Proportional to 1,991,344.40, 2,986,627.80 and 661,648.40

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Solution

The fourth proportional to 1,991,344.40, 2,986,627.80 and 661,648.40 is: 992,343.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991,344.40 : 2,986,627.80 = 661,648.40 : x
  2. Step 2: Convert to fraction form
    1,991,344.40/2,986,627.80 = 661,648.40/x
  3. Step 3: Cross multiply
    1,991,344.40x = 2,986,627.80 × 661,648.40
  4. Step 4: Simplify right side
    1,991,344.40x = 1,976,097,505,265.52
  5. Step 5: Solve for x
    x = 1,976,097,505,265.52/1,991,344.40
  6. Step 6: Final answer
    x = 992,343.42

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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.