Home / 1,405,340.35-2,108,789.98-685,687.95

Finding the Fourth Proportional to 1,405,340.35, 2,108,789.98 and 685,687.95

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Solution

The fourth proportional to 1,405,340.35, 2,108,789.98 and 685,687.95 is: 1,028,912.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,405,340.35 : 2,108,789.98 = 685,687.95 : x
  2. Step 2: Convert to fraction form
    1,405,340.35/2,108,789.98 = 685,687.95/x
  3. Step 3: Cross multiply
    1,405,340.35x = 2,108,789.98 × 685,687.95
  4. Step 4: Simplify right side
    1,405,340.35x = 1,445,971,876,652.52
  5. Step 5: Solve for x
    x = 1,445,971,876,652.52/1,405,340.35
  6. Step 6: Final answer
    x = 1,028,912.23

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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.