Home / 2,139,243.11-3,208,019.51-679,764.66

Finding the Fourth Proportional to 2,139,243.11, 3,208,019.51 and 679,764.66

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Solution

The fourth proportional to 2,139,243.11, 3,208,019.51 and 679,764.66 is: 1,019,378.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,139,243.11 : 3,208,019.51 = 679,764.66 : x
  2. Step 2: Convert to fraction form
    2,139,243.11/3,208,019.51 = 679,764.66/x
  3. Step 3: Cross multiply
    2,139,243.11x = 3,208,019.51 × 679,764.66
  4. Step 4: Simplify right side
    2,139,243.11x = 2,180,698,291,488.52
  5. Step 5: Solve for x
    x = 2,180,698,291,488.52/2,139,243.11
  6. Step 6: Final answer
    x = 1,019,378.43

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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.