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Finding the Fourth Proportional to 644,999.70, 967,499.55 and 326,135.10

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Solution

The fourth proportional to 644,999.70, 967,499.55 and 326,135.10 is: 489,202.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,999.70 : 967,499.55 = 326,135.10 : x
  2. Step 2: Convert to fraction form
    644,999.70/967,499.55 = 326,135.10/x
  3. Step 3: Cross multiply
    644,999.70x = 967,499.55 × 326,135.10
  4. Step 4: Simplify right side
    644,999.70x = 315,535,562,489.21
  5. Step 5: Solve for x
    x = 315,535,562,489.21/644,999.70
  6. Step 6: Final answer
    x = 489,202.65

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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.