Home / 870,401.86-1,305,974.31-491,606.98

Finding the Fourth Proportional to 870,401.86, 1,305,974.31 and 491,606.98

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Solution

The fourth proportional to 870,401.86, 1,305,974.31 and 491,606.98 is: 737,620.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,401.86 : 1,305,974.31 = 491,606.98 : x
  2. Step 2: Convert to fraction form
    870,401.86/1,305,974.31 = 491,606.98/x
  3. Step 3: Cross multiply
    870,401.86x = 1,305,974.31 × 491,606.98
  4. Step 4: Simplify right side
    870,401.86x = 642,026,086,496.68
  5. Step 5: Solve for x
    x = 642,026,086,496.68/870,401.86
  6. Step 6: Final answer
    x = 737,620.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.