Home / 815,990.16-1,215,783.82-770,152.46

Finding the Fourth Proportional to 815,990.16, 1,215,783.82 and 770,152.46

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Solution

The fourth proportional to 815,990.16, 1,215,783.82 and 770,152.46 is: 1,147,487.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,990.16 : 1,215,783.82 = 770,152.46 : x
  2. Step 2: Convert to fraction form
    815,990.16/1,215,783.82 = 770,152.46/x
  3. Step 3: Cross multiply
    815,990.16x = 1,215,783.82 × 770,152.46
  4. Step 4: Simplify right side
    815,990.16x = 936,338,899,801.20
  5. Step 5: Solve for x
    x = 936,338,899,801.20/815,990.16
  6. Step 6: Final answer
    x = 1,147,487.98

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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.