Home / 1,279,131.28-1,918,362.56-380,330.96

Finding the Fourth Proportional to 1,279,131.28, 1,918,362.56 and 380,330.96

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Solution

The fourth proportional to 1,279,131.28, 1,918,362.56 and 380,330.96 is: 570,397.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,131.28 : 1,918,362.56 = 380,330.96 : x
  2. Step 2: Convert to fraction form
    1,279,131.28/1,918,362.56 = 380,330.96/x
  3. Step 3: Cross multiply
    1,279,131.28x = 1,918,362.56 × 380,330.96
  4. Step 4: Simplify right side
    1,279,131.28x = 729,612,674,072.86
  5. Step 5: Solve for x
    x = 729,612,674,072.86/1,279,131.28
  6. Step 6: Final answer
    x = 570,397.02

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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.