Home / 2,173,921.80-3,261,660.30-912,136.20

Finding the Fourth Proportional to 2,173,921.80, 3,261,660.30 and 912,136.20

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Solution

The fourth proportional to 2,173,921.80, 3,261,660.30 and 912,136.20 is: 1,368,530.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,173,921.80 : 3,261,660.30 = 912,136.20 : x
  2. Step 2: Convert to fraction form
    2,173,921.80/3,261,660.30 = 912,136.20/x
  3. Step 3: Cross multiply
    2,173,921.80x = 3,261,660.30 × 912,136.20
  4. Step 4: Simplify right side
    2,173,921.80x = 2,975,078,431,732.86
  5. Step 5: Solve for x
    x = 2,975,078,431,732.86/2,173,921.80
  6. Step 6: Final answer
    x = 1,368,530.57

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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.