Home / 1,222,763.99-1,687,467-678,899.80

Finding the Fourth Proportional to 1,222,763.99, 1,687,467 and 678,899.80

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Solution

The fourth proportional to 1,222,763.99, 1,687,467 and 678,899.80 is: 936,910.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,763.99 : 1,687,467 = 678,899.80 : x
  2. Step 2: Convert to fraction form
    1,222,763.99/1,687,467 = 678,899.80/x
  3. Step 3: Cross multiply
    1,222,763.99x = 1,687,467 × 678,899.80
  4. Step 4: Simplify right side
    1,222,763.99x = 1,145,621,008,806.60
  5. Step 5: Solve for x
    x = 1,145,621,008,806.60/1,222,763.99
  6. Step 6: Final answer
    x = 936,910.98

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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.