Home / 753,138.73-1,129,707.89-220,659.58

Finding the Fourth Proportional to 753,138.73, 1,129,707.89 and 220,659.58

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Solution

The fourth proportional to 753,138.73, 1,129,707.89 and 220,659.58 is: 330,989.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,138.73 : 1,129,707.89 = 220,659.58 : x
  2. Step 2: Convert to fraction form
    753,138.73/1,129,707.89 = 220,659.58/x
  3. Step 3: Cross multiply
    753,138.73x = 1,129,707.89 × 220,659.58
  4. Step 4: Simplify right side
    753,138.73x = 249,280,868,530.09
  5. Step 5: Solve for x
    x = 249,280,868,530.09/753,138.73
  6. Step 6: Final answer
    x = 330,989.31

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Double scale
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Similar ratio
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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.