Home / 1,288,919.79-1,933,741.67-378,123.75

Finding the Fourth Proportional to 1,288,919.79, 1,933,741.67 and 378,123.75

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Solution

The fourth proportional to 1,288,919.79, 1,933,741.67 and 378,123.75 is: 567,291.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,919.79 : 1,933,741.67 = 378,123.75 : x
  2. Step 2: Convert to fraction form
    1,288,919.79/1,933,741.67 = 378,123.75/x
  3. Step 3: Cross multiply
    1,288,919.79x = 1,933,741.67 × 378,123.75
  4. Step 4: Simplify right side
    1,288,919.79x = 731,193,649,901.04
  5. Step 5: Solve for x
    x = 731,193,649,901.04/1,288,919.79
  6. Step 6: Final answer
    x = 567,291.82

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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.