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Finding the Fourth Proportional to 640,435.34, 960,618.36 and 324,884.06

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Solution

The fourth proportional to 640,435.34, 960,618.36 and 324,884.06 is: 487,308.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,435.34 : 960,618.36 = 324,884.06 : x
  2. Step 2: Convert to fraction form
    640,435.34/960,618.36 = 324,884.06/x
  3. Step 3: Cross multiply
    640,435.34x = 960,618.36 × 324,884.06
  4. Step 4: Simplify right side
    640,435.34x = 312,089,592,907.34
  5. Step 5: Solve for x
    x = 312,089,592,907.34/640,435.34
  6. Step 6: Final answer
    x = 487,308.51

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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.