Home / 1,313,823.85-1,813,100.53-770,113.78

Finding the Fourth Proportional to 1,313,823.85, 1,813,100.53 and 770,113.78

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Solution

The fourth proportional to 1,313,823.85, 1,813,100.53 and 770,113.78 is: 1,062,770.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,313,823.85 : 1,813,100.53 = 770,113.78 : x
  2. Step 2: Convert to fraction form
    1,313,823.85/1,813,100.53 = 770,113.78/x
  3. Step 3: Cross multiply
    1,313,823.85x = 1,813,100.53 × 770,113.78
  4. Step 4: Simplify right side
    1,313,823.85x = 1,396,293,693,612.80
  5. Step 5: Solve for x
    x = 1,396,293,693,612.80/1,313,823.85
  6. Step 6: Final answer
    x = 1,062,770.86

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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.