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Finding the Fourth Proportional to 603,442.80, 905,747.40 and 304,261.20

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Solution

The fourth proportional to 603,442.80, 905,747.40 and 304,261.20 is: 456,685.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,442.80 : 905,747.40 = 304,261.20 : x
  2. Step 2: Convert to fraction form
    603,442.80/905,747.40 = 304,261.20/x
  3. Step 3: Cross multiply
    603,442.80x = 905,747.40 × 304,261.20
  4. Step 4: Simplify right side
    603,442.80x = 275,583,790,820.88
  5. Step 5: Solve for x
    x = 275,583,790,820.88/603,442.80
  6. Step 6: Final answer
    x = 456,685.85

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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.