Home / 1,275,693.92-1,912,578.73-770,134.74

Finding the Fourth Proportional to 1,275,693.92, 1,912,578.73 and 770,134.74

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Solution

The fourth proportional to 1,275,693.92, 1,912,578.73 and 770,134.74 is: 1,154,621.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,275,693.92 : 1,912,578.73 = 770,134.74 : x
  2. Step 2: Convert to fraction form
    1,275,693.92/1,912,578.73 = 770,134.74/x
  3. Step 3: Cross multiply
    1,275,693.92x = 1,912,578.73 × 770,134.74
  4. Step 4: Simplify right side
    1,275,693.92x = 1,472,943,318,192.58
  5. Step 5: Solve for x
    x = 1,472,943,318,192.58/1,275,693.92
  6. Step 6: Final answer
    x = 1,154,621.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.