Home / 1,278,409.88-1,917,116.46-479,255.38

Finding the Fourth Proportional to 1,278,409.88, 1,917,116.46 and 479,255.38

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Solution

The fourth proportional to 1,278,409.88, 1,917,116.46 and 479,255.38 is: 718,696.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,409.88 : 1,917,116.46 = 479,255.38 : x
  2. Step 2: Convert to fraction form
    1,278,409.88/1,917,116.46 = 479,255.38/x
  3. Step 3: Cross multiply
    1,278,409.88x = 1,917,116.46 × 479,255.38
  4. Step 4: Simplify right side
    1,278,409.88x = 918,788,377,541.56
  5. Step 5: Solve for x
    x = 918,788,377,541.56/1,278,409.88
  6. Step 6: Final answer
    x = 718,696.24

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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.