Home / 3,120,843.12-4,304,374.20-2,155,588.80

Finding the Fourth Proportional to 3,120,843.12, 4,304,374.20 and 2,155,588.80

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Solution

The fourth proportional to 3,120,843.12, 4,304,374.20 and 2,155,588.80 is: 2,973,062.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120,843.12 : 4,304,374.20 = 2,155,588.80 : x
  2. Step 2: Convert to fraction form
    3,120,843.12/4,304,374.20 = 2,155,588.80/x
  3. Step 3: Cross multiply
    3,120,843.12x = 4,304,374.20 × 2,155,588.80
  4. Step 4: Simplify right side
    3,120,843.12x = 9,278,460,816,528.96
  5. Step 5: Solve for x
    x = 9,278,460,816,528.96/3,120,843.12
  6. Step 6: Final answer
    x = 2,973,062.23

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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.