Home / 739,331.20-1,109,515.20-318,908.80

Finding the Fourth Proportional to 739,331.20, 1,109,515.20 and 318,908.80

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Solution

The fourth proportional to 739,331.20, 1,109,515.20 and 318,908.80 is: 478,586.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,331.20 : 1,109,515.20 = 318,908.80 : x
  2. Step 2: Convert to fraction form
    739,331.20/1,109,515.20 = 318,908.80/x
  3. Step 3: Cross multiply
    739,331.20x = 1,109,515.20 × 318,908.80
  4. Step 4: Simplify right side
    739,331.20x = 353,834,161,013.76
  5. Step 5: Solve for x
    x = 353,834,161,013.76/739,331.20
  6. Step 6: Final answer
    x = 478,586.81

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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.