Home / 1,320,788-1,822,687.44-717,176

Finding the Fourth Proportional to 1,320,788, 1,822,687.44 and 717,176

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Solution

The fourth proportional to 1,320,788, 1,822,687.44 and 717,176 is: 989,702.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,788 : 1,822,687.44 = 717,176 : x
  2. Step 2: Convert to fraction form
    1,320,788/1,822,687.44 = 717,176/x
  3. Step 3: Cross multiply
    1,320,788x = 1,822,687.44 × 717,176
  4. Step 4: Simplify right side
    1,320,788x = 1,307,187,687,469.44
  5. Step 5: Solve for x
    x = 1,307,187,687,469.44/1,320,788
  6. Step 6: Final answer
    x = 989,702.88

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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.