Home / 781,517.81-1,172,276.71-220,552.31

Finding the Fourth Proportional to 781,517.81, 1,172,276.71 and 220,552.31

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Solution

The fourth proportional to 781,517.81, 1,172,276.71 and 220,552.31 is: 330,828.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,517.81 : 1,172,276.71 = 220,552.31 : x
  2. Step 2: Convert to fraction form
    781,517.81/1,172,276.71 = 220,552.31/x
  3. Step 3: Cross multiply
    781,517.81x = 1,172,276.71 × 220,552.31
  4. Step 4: Simplify right side
    781,517.81x = 258,548,330,488.32
  5. Step 5: Solve for x
    x = 258,548,330,488.32/781,517.81
  6. Step 6: Final answer
    x = 330,828.46

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Double scale
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Similar ratio
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1.5x scale

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.