Home / 528,073.20-792,109.80-318,121.20

Finding the Fourth Proportional to 528,073.20, 792,109.80 and 318,121.20

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Solution

The fourth proportional to 528,073.20, 792,109.80 and 318,121.20 is: 477,181.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,073.20 : 792,109.80 = 318,121.20 : x
  2. Step 2: Convert to fraction form
    528,073.20/792,109.80 = 318,121.20/x
  3. Step 3: Cross multiply
    528,073.20x = 792,109.80 × 318,121.20
  4. Step 4: Simplify right side
    528,073.20x = 251,986,920,107.76
  5. Step 5: Solve for x
    x = 251,986,920,107.76/528,073.20
  6. Step 6: Final answer
    x = 477,181.80

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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.