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Finding the Fourth Proportional to 419,529.80, 627,912.30 and 325,526.60

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Solution

The fourth proportional to 419,529.80, 627,912.30 and 325,526.60 is: 487,217.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,529.80 : 627,912.30 = 325,526.60 : x
  2. Step 2: Convert to fraction form
    419,529.80/627,912.30 = 325,526.60/x
  3. Step 3: Cross multiply
    419,529.80x = 627,912.30 × 325,526.60
  4. Step 4: Simplify right side
    419,529.80x = 204,402,156,117.18
  5. Step 5: Solve for x
    x = 204,402,156,117.18/419,529.80
  6. Step 6: Final answer
    x = 487,217.25

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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.