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Finding the Fourth Proportional to 729,520.80, 1,093,762.80 and 330,352.80

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Solution

The fourth proportional to 729,520.80, 1,093,762.80 and 330,352.80 is: 495,294.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,520.80 : 1,093,762.80 = 330,352.80 : x
  2. Step 2: Convert to fraction form
    729,520.80/1,093,762.80 = 330,352.80/x
  3. Step 3: Cross multiply
    729,520.80x = 1,093,762.80 × 330,352.80
  4. Step 4: Simplify right side
    729,520.80x = 361,327,603,515.84
  5. Step 5: Solve for x
    x = 361,327,603,515.84/729,520.80
  6. Step 6: Final answer
    x = 495,294.45

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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.