Home / 739,329.20-1,109,512.20-318,906.80

Finding the Fourth Proportional to 739,329.20, 1,109,512.20 and 318,906.80

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Solution

The fourth proportional to 739,329.20, 1,109,512.20 and 318,906.80 is: 478,583.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,329.20 : 1,109,512.20 = 318,906.80 : x
  2. Step 2: Convert to fraction form
    739,329.20/1,109,512.20 = 318,906.80/x
  3. Step 3: Cross multiply
    739,329.20x = 1,109,512.20 × 318,906.80
  4. Step 4: Simplify right side
    739,329.20x = 353,830,985,262.96
  5. Step 5: Solve for x
    x = 353,830,985,262.96/739,329.20
  6. Step 6: Final answer
    x = 478,583.81

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1.5x scale

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.