Home / 1,278,406.26-1,917,111.03-479,251.75

Finding the Fourth Proportional to 1,278,406.26, 1,917,111.03 and 479,251.75

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Solution

The fourth proportional to 1,278,406.26, 1,917,111.03 and 479,251.75 is: 718,690.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,406.26 : 1,917,111.03 = 479,251.75 : x
  2. Step 2: Convert to fraction form
    1,278,406.26/1,917,111.03 = 479,251.75/x
  3. Step 3: Cross multiply
    1,278,406.26x = 1,917,111.03 × 479,251.75
  4. Step 4: Simplify right side
    1,278,406.26x = 918,778,816,071.80
  5. Step 5: Solve for x
    x = 918,778,816,071.80/1,278,406.26
  6. Step 6: Final answer
    x = 718,690.80

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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.