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Finding the Fourth Proportional to 553,679.80, 831,441.30 and 304,540.60

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Solution

The fourth proportional to 553,679.80, 831,441.30 and 304,540.60 is: 457,317.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,679.80 : 831,441.30 = 304,540.60 : x
  2. Step 2: Convert to fraction form
    553,679.80/831,441.30 = 304,540.60/x
  3. Step 3: Cross multiply
    553,679.80x = 831,441.30 × 304,540.60
  4. Step 4: Simplify right side
    553,679.80x = 253,207,632,366.78
  5. Step 5: Solve for x
    x = 253,207,632,366.78/553,679.80
  6. Step 6: Final answer
    x = 457,317.81

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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.