Home / 1,279,117.28-1,918,341.60-380,316.96

Finding the Fourth Proportional to 1,279,117.28, 1,918,341.60 and 380,316.96

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Solution

The fourth proportional to 1,279,117.28, 1,918,341.60 and 380,316.96 is: 570,376.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,117.28 : 1,918,341.60 = 380,316.96 : x
  2. Step 2: Convert to fraction form
    1,279,117.28/1,918,341.60 = 380,316.96/x
  3. Step 3: Cross multiply
    1,279,117.28x = 1,918,341.60 × 380,316.96
  4. Step 4: Simplify right side
    1,279,117.28x = 729,577,845,553.54
  5. Step 5: Solve for x
    x = 729,577,845,553.54/1,279,117.28
  6. Step 6: Final answer
    x = 570,376.04

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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.