Home / 820,199.85-1,131,849.35-447,648.50

Finding the Fourth Proportional to 820,199.85, 1,131,849.35 and 447,648.50

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Solution

The fourth proportional to 820,199.85, 1,131,849.35 and 447,648.50 is: 617,740.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,199.85 : 1,131,849.35 = 447,648.50 : x
  2. Step 2: Convert to fraction form
    820,199.85/1,131,849.35 = 447,648.50/x
  3. Step 3: Cross multiply
    820,199.85x = 1,131,849.35 × 447,648.50
  4. Step 4: Simplify right side
    820,199.85x = 506,670,663,753.48
  5. Step 5: Solve for x
    x = 506,670,663,753.48/820,199.85
  6. Step 6: Final answer
    x = 617,740.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.