Home / 1,222,764.99-1,687,468.38-678,900.80

Finding the Fourth Proportional to 1,222,764.99, 1,687,468.38 and 678,900.80

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Solution

The fourth proportional to 1,222,764.99, 1,687,468.38 and 678,900.80 is: 936,912.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,764.99 : 1,687,468.38 = 678,900.80 : x
  2. Step 2: Convert to fraction form
    1,222,764.99/1,687,468.38 = 678,900.80/x
  3. Step 3: Cross multiply
    1,222,764.99x = 1,687,468.38 × 678,900.80
  4. Step 4: Simplify right side
    1,222,764.99x = 1,145,623,633,156.70
  5. Step 5: Solve for x
    x = 1,145,623,633,156.70/1,222,764.99
  6. Step 6: Final answer
    x = 936,912.36

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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.