Home / 1,279,371.76-1,919,066.56-878,798.42

Finding the Fourth Proportional to 1,279,371.76, 1,919,066.56 and 878,798.42

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Solution

The fourth proportional to 1,279,371.76, 1,919,066.56 and 878,798.42 is: 1,318,203.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,371.76 : 1,919,066.56 = 878,798.42 : x
  2. Step 2: Convert to fraction form
    1,279,371.76/1,919,066.56 = 878,798.42/x
  3. Step 3: Cross multiply
    1,279,371.76x = 1,919,066.56 × 878,798.42
  4. Step 4: Simplify right side
    1,279,371.76x = 1,686,472,660,802.84
  5. Step 5: Solve for x
    x = 1,686,472,660,802.84/1,279,371.76
  6. Step 6: Final answer
    x = 1,318,203.76

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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.