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Finding the Fourth Proportional to 643,734.34, 965,601.51 and 343,304.73

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Solution

The fourth proportional to 643,734.34, 965,601.51 and 343,304.73 is: 514,957.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,734.34 : 965,601.51 = 343,304.73 : x
  2. Step 2: Convert to fraction form
    643,734.34/965,601.51 = 343,304.73/x
  3. Step 3: Cross multiply
    643,734.34x = 965,601.51 × 343,304.73
  4. Step 4: Simplify right side
    643,734.34x = 331,495,559,133.61
  5. Step 5: Solve for x
    x = 331,495,559,133.61/643,734.34
  6. Step 6: Final answer
    x = 514,957.09

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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.