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Finding the Fourth Proportional to 603,239.85, 905,012.93 and 279,261.52

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Solution

The fourth proportional to 603,239.85, 905,012.93 and 279,261.52 is: 418,963.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,239.85 : 905,012.93 = 279,261.52 : x
  2. Step 2: Convert to fraction form
    603,239.85/905,012.93 = 279,261.52/x
  3. Step 3: Cross multiply
    603,239.85x = 905,012.93 × 279,261.52
  4. Step 4: Simplify right side
    603,239.85x = 252,735,284,887.08
  5. Step 5: Solve for x
    x = 252,735,284,887.08/603,239.85
  6. Step 6: Final answer
    x = 418,963.18

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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.