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Finding the Fourth Proportional to 644,665.70, 966,998.55 and 325,801.10

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Solution

The fourth proportional to 644,665.70, 966,998.55 and 325,801.10 is: 488,701.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,665.70 : 966,998.55 = 325,801.10 : x
  2. Step 2: Convert to fraction form
    644,665.70/966,998.55 = 325,801.10/x
  3. Step 3: Cross multiply
    644,665.70x = 966,998.55 × 325,801.10
  4. Step 4: Simplify right side
    644,665.70x = 315,049,191,288.41
  5. Step 5: Solve for x
    x = 315,049,191,288.41/644,665.70
  6. Step 6: Final answer
    x = 488,701.65

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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.