Home / 2,156,133.88-2,975,478.78-1,189,290.28

Finding the Fourth Proportional to 2,156,133.88, 2,975,478.78 and 1,189,290.28

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Solution

The fourth proportional to 2,156,133.88, 2,975,478.78 and 1,189,290.28 is: 1,641,228.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,156,133.88 : 2,975,478.78 = 1,189,290.28 : x
  2. Step 2: Convert to fraction form
    2,156,133.88/2,975,478.78 = 1,189,290.28/x
  3. Step 3: Cross multiply
    2,156,133.88x = 2,975,478.78 × 1,189,290.28
  4. Step 4: Simplify right side
    2,156,133.88x = 3,538,707,991,400.26
  5. Step 5: Solve for x
    x = 3,538,707,991,400.26/2,156,133.88
  6. Step 6: Final answer
    x = 1,641,228.32

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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.