Home / 478,769.76-718,179.21-123,786.81

Finding the Fourth Proportional to 478,769.76, 718,179.21 and 123,786.81

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Solution

The fourth proportional to 478,769.76, 718,179.21 and 123,786.81 is: 185,686.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,769.76 : 718,179.21 = 123,786.81 : x
  2. Step 2: Convert to fraction form
    478,769.76/718,179.21 = 123,786.81/x
  3. Step 3: Cross multiply
    478,769.76x = 718,179.21 × 123,786.81
  4. Step 4: Simplify right side
    478,769.76x = 88,901,113,414.22
  5. Step 5: Solve for x
    x = 88,901,113,414.22/478,769.76
  6. Step 6: Final answer
    x = 185,686.57

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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.