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Finding the Fourth Proportional to 603,866.88, 905,839.20 and 354,024

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Solution

The fourth proportional to 603,866.88, 905,839.20 and 354,024 is: 531,058.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,866.88 : 905,839.20 = 354,024 : x
  2. Step 2: Convert to fraction form
    603,866.88/905,839.20 = 354,024/x
  3. Step 3: Cross multiply
    603,866.88x = 905,839.20 × 354,024
  4. Step 4: Simplify right side
    603,866.88x = 320,688,816,940.80
  5. Step 5: Solve for x
    x = 320,688,816,940.80/603,866.88
  6. Step 6: Final answer
    x = 531,058.79

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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.