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Finding the Fourth Proportional to 464,406.28, 640,287.38 and 300,773.68

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Solution

The fourth proportional to 464,406.28, 640,287.38 and 300,773.68 is: 414,683.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    464,406.28 : 640,287.38 = 300,773.68 : x
  2. Step 2: Convert to fraction form
    464,406.28/640,287.38 = 300,773.68/x
  3. Step 3: Cross multiply
    464,406.28x = 640,287.38 × 300,773.68
  4. Step 4: Simplify right side
    464,406.28x = 192,581,591,540.16
  5. Step 5: Solve for x
    x = 192,581,591,540.16/464,406.28
  6. Step 6: Final answer
    x = 414,683.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.