Home / 1,398,020.92-1,929,279.97-777,835.10

Finding the Fourth Proportional to 1,398,020.92, 1,929,279.97 and 777,835.10

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Solution

The fourth proportional to 1,398,020.92, 1,929,279.97 and 777,835.10 is: 1,073,418.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398,020.92 : 1,929,279.97 = 777,835.10 : x
  2. Step 2: Convert to fraction form
    1,398,020.92/1,929,279.97 = 777,835.10/x
  3. Step 3: Cross multiply
    1,398,020.92x = 1,929,279.97 × 777,835.10
  4. Step 4: Simplify right side
    1,398,020.92x = 1,500,661,684,188.44
  5. Step 5: Solve for x
    x = 1,500,661,684,188.44/1,398,020.92
  6. Step 6: Final answer
    x = 1,073,418.62

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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.