Home / 1,245,155.94-1,718,565.39-815,279.22

Finding the Fourth Proportional to 1,245,155.94, 1,718,565.39 and 815,279.22

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Solution

The fourth proportional to 1,245,155.94, 1,718,565.39 and 815,279.22 is: 1,125,249.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245,155.94 : 1,718,565.39 = 815,279.22 : x
  2. Step 2: Convert to fraction form
    1,245,155.94/1,718,565.39 = 815,279.22/x
  3. Step 3: Cross multiply
    1,245,155.94x = 1,718,565.39 × 815,279.22
  4. Step 4: Simplify right side
    1,245,155.94x = 1,401,110,650,678.20
  5. Step 5: Solve for x
    x = 1,401,110,650,678.20/1,245,155.94
  6. Step 6: Final answer
    x = 1,125,249.14

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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.