Home / 1,238,198.13-1,707,989.31-778,585.05

Finding the Fourth Proportional to 1,238,198.13, 1,707,989.31 and 778,585.05

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Solution

The fourth proportional to 1,238,198.13, 1,707,989.31 and 778,585.05 is: 1,073,992.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,198.13 : 1,707,989.31 = 778,585.05 : x
  2. Step 2: Convert to fraction form
    1,238,198.13/1,707,989.31 = 778,585.05/x
  3. Step 3: Cross multiply
    1,238,198.13x = 1,707,989.31 × 778,585.05
  4. Step 4: Simplify right side
    1,238,198.13x = 1,329,814,942,325.82
  5. Step 5: Solve for x
    x = 1,329,814,942,325.82/1,238,198.13
  6. Step 6: Final answer
    x = 1,073,992.05

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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.