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Finding the Fourth Proportional to 646,392.89, 969,589.34 and 203,160.89

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Solution

The fourth proportional to 646,392.89, 969,589.34 and 203,160.89 is: 304,741.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,392.89 : 969,589.34 = 203,160.89 : x
  2. Step 2: Convert to fraction form
    646,392.89/969,589.34 = 203,160.89/x
  3. Step 3: Cross multiply
    646,392.89x = 969,589.34 × 203,160.89
  4. Step 4: Simplify right side
    646,392.89x = 196,982,632,233.11
  5. Step 5: Solve for x
    x = 196,982,632,233.11/646,392.89
  6. Step 6: Final answer
    x = 304,741.34

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Half scale
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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.