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Finding the Fourth Proportional to 644,693.20, 967,039.80 and 325,828.60

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Solution

The fourth proportional to 644,693.20, 967,039.80 and 325,828.60 is: 488,742.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,693.20 : 967,039.80 = 325,828.60 : x
  2. Step 2: Convert to fraction form
    644,693.20/967,039.80 = 325,828.60/x
  3. Step 3: Cross multiply
    644,693.20x = 967,039.80 × 325,828.60
  4. Step 4: Simplify right side
    644,693.20x = 315,089,224,178.28
  5. Step 5: Solve for x
    x = 315,089,224,178.28/644,693.20
  6. Step 6: Final answer
    x = 488,742.90

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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.