Home / 2,156,119.79-2,975,433.21-1,189,247.90

Finding the Fourth Proportional to 2,156,119.79, 2,975,433.21 and 1,189,247.90

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Solution

The fourth proportional to 2,156,119.79, 2,975,433.21 and 1,189,247.90 is: 1,641,155.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,156,119.79 : 2,975,433.21 = 1,189,247.90 : x
  2. Step 2: Convert to fraction form
    2,156,119.79/2,975,433.21 = 1,189,247.90/x
  3. Step 3: Cross multiply
    2,156,119.79x = 2,975,433.21 × 1,189,247.90
  4. Step 4: Simplify right side
    2,156,119.79x = 3,538,527,681,705.59
  5. Step 5: Solve for x
    x = 3,538,527,681,705.59/2,156,119.79
  6. Step 6: Final answer
    x = 1,641,155.42

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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.