Home / 1,515,604.80-2,091,222.41-870,900.44

Finding the Fourth Proportional to 1,515,604.80, 2,091,222.41 and 870,900.44

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Solution

The fourth proportional to 1,515,604.80, 2,091,222.41 and 870,900.44 is: 1,201,663.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515,604.80 : 2,091,222.41 = 870,900.44 : x
  2. Step 2: Convert to fraction form
    1,515,604.80/2,091,222.41 = 870,900.44/x
  3. Step 3: Cross multiply
    1,515,604.80x = 2,091,222.41 × 870,900.44
  4. Step 4: Simplify right side
    1,515,604.80x = 1,821,246,517,006.86
  5. Step 5: Solve for x
    x = 1,821,246,517,006.86/1,515,604.80
  6. Step 6: Final answer
    x = 1,201,663.20

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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.