Home / 1,222,765.03-1,687,468.44-678,900.89

Finding the Fourth Proportional to 1,222,765.03, 1,687,468.44 and 678,900.89

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Solution

The fourth proportional to 1,222,765.03, 1,687,468.44 and 678,900.89 is: 936,912.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,765.03 : 1,687,468.44 = 678,900.89 : x
  2. Step 2: Convert to fraction form
    1,222,765.03/1,687,468.44 = 678,900.89/x
  3. Step 3: Cross multiply
    1,222,765.03x = 1,687,468.44 × 678,900.89
  4. Step 4: Simplify right side
    1,222,765.03x = 1,145,623,832,527.46
  5. Step 5: Solve for x
    x = 1,145,623,832,527.46/1,222,765.03
  6. Step 6: Final answer
    x = 936,912.49

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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.