Home / 1,557,144.68-2,148,859.86-878,081.36

Finding the Fourth Proportional to 1,557,144.68, 2,148,859.86 and 878,081.36

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Solution

The fourth proportional to 1,557,144.68, 2,148,859.86 and 878,081.36 is: 1,211,752.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,557,144.68 : 2,148,859.86 = 878,081.36 : x
  2. Step 2: Convert to fraction form
    1,557,144.68/2,148,859.86 = 878,081.36/x
  3. Step 3: Cross multiply
    1,557,144.68x = 2,148,859.86 × 878,081.36
  4. Step 4: Simplify right side
    1,557,144.68x = 1,886,873,788,318.21
  5. Step 5: Solve for x
    x = 1,886,873,788,318.21/1,557,144.68
  6. Step 6: Final answer
    x = 1,211,752.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.