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Finding the Fourth Proportional to 603,342.09, 903,634.74 and 288,020.43

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Solution

The fourth proportional to 603,342.09, 903,634.74 and 288,020.43 is: 431,372.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,342.09 : 903,634.74 = 288,020.43 : x
  2. Step 2: Convert to fraction form
    603,342.09/903,634.74 = 288,020.43/x
  3. Step 3: Cross multiply
    603,342.09x = 903,634.74 × 288,020.43
  4. Step 4: Simplify right side
    603,342.09x = 260,265,266,377.74
  5. Step 5: Solve for x
    x = 260,265,266,377.74/603,342.09
  6. Step 6: Final answer
    x = 431,372.63

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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.