Home / 528,868.40-792,136.20-318,138.80

Finding the Fourth Proportional to 528,868.40, 792,136.20 and 318,138.80

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Solution

The fourth proportional to 528,868.40, 792,136.20 and 318,138.80 is: 476,506.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,868.40 : 792,136.20 = 318,138.80 : x
  2. Step 2: Convert to fraction form
    528,868.40/792,136.20 = 318,138.80/x
  3. Step 3: Cross multiply
    528,868.40x = 792,136.20 × 318,138.80
  4. Step 4: Simplify right side
    528,868.40x = 252,009,260,104.56
  5. Step 5: Solve for x
    x = 252,009,260,104.56/528,868.40
  6. Step 6: Final answer
    x = 476,506.56

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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.