Home / 543,355.20-815,032.80-318,823.20

Finding the Fourth Proportional to 543,355.20, 815,032.80 and 318,823.20

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Solution

The fourth proportional to 543,355.20, 815,032.80 and 318,823.20 is: 478,234.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,355.20 : 815,032.80 = 318,823.20 : x
  2. Step 2: Convert to fraction form
    543,355.20/815,032.80 = 318,823.20/x
  3. Step 3: Cross multiply
    543,355.20x = 815,032.80 × 318,823.20
  4. Step 4: Simplify right side
    543,355.20x = 259,851,365,400.96
  5. Step 5: Solve for x
    x = 259,851,365,400.96/543,355.20
  6. Step 6: Final answer
    x = 478,234.80

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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.