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Finding the Fourth Proportional to 432,783.60, 649,175.40 and 327,807.60

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Solution

The fourth proportional to 432,783.60, 649,175.40 and 327,807.60 is: 491,711.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,783.60 : 649,175.40 = 327,807.60 : x
  2. Step 2: Convert to fraction form
    432,783.60/649,175.40 = 327,807.60/x
  3. Step 3: Cross multiply
    432,783.60x = 649,175.40 × 327,807.60
  4. Step 4: Simplify right side
    432,783.60x = 212,804,629,853.04
  5. Step 5: Solve for x
    x = 212,804,629,853.04/432,783.60
  6. Step 6: Final answer
    x = 491,711.40

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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.