Home / 2,119,144.88-3,178,417.88-679,641.20

Finding the Fourth Proportional to 2,119,144.88, 3,178,417.88 and 679,641.20

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Solution

The fourth proportional to 2,119,144.88, 3,178,417.88 and 679,641.20 is: 1,019,365.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,119,144.88 : 3,178,417.88 = 679,641.20 : x
  2. Step 2: Convert to fraction form
    2,119,144.88/3,178,417.88 = 679,641.20/x
  3. Step 3: Cross multiply
    2,119,144.88x = 3,178,417.88 × 679,641.20
  4. Step 4: Simplify right side
    2,119,144.88x = 2,160,183,722,774.36
  5. Step 5: Solve for x
    x = 2,160,183,722,774.36/2,119,144.88
  6. Step 6: Final answer
    x = 1,019,365.76

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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.