Home / 516,578.30-774,976.80-156,719.60

Finding the Fourth Proportional to 516,578.30, 774,976.80 and 156,719.60

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Solution

The fourth proportional to 516,578.30, 774,976.80 and 156,719.60 is: 235,112.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,578.30 : 774,976.80 = 156,719.60 : x
  2. Step 2: Convert to fraction form
    516,578.30/774,976.80 = 156,719.60/x
  3. Step 3: Cross multiply
    516,578.30x = 774,976.80 × 156,719.60
  4. Step 4: Simplify right side
    516,578.30x = 121,454,054,105.28
  5. Step 5: Solve for x
    x = 121,454,054,105.28/516,578.30
  6. Step 6: Final answer
    x = 235,112.57

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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.