Home / 815,989.64-1,215,783.09-770,151.96

Finding the Fourth Proportional to 815,989.64, 1,215,783.09 and 770,151.96

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Solution

The fourth proportional to 815,989.64, 1,215,783.09 and 770,151.96 is: 1,147,487.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,989.64 : 1,215,783.09 = 770,151.96 : x
  2. Step 2: Convert to fraction form
    815,989.64/1,215,783.09 = 770,151.96/x
  3. Step 3: Cross multiply
    815,989.64x = 1,215,783.09 × 770,151.96
  4. Step 4: Simplify right side
    815,989.64x = 936,337,729,698.36
  5. Step 5: Solve for x
    x = 936,337,729,698.36/815,989.64
  6. Step 6: Final answer
    x = 1,147,487.28

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.