Home / 820,311.77-1,131,861.22-471,384.71

Finding the Fourth Proportional to 820,311.77, 1,131,861.22 and 471,384.71

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Solution

The fourth proportional to 820,311.77, 1,131,861.22 and 471,384.71 is: 650,413.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,311.77 : 1,131,861.22 = 471,384.71 : x
  2. Step 2: Convert to fraction form
    820,311.77/1,131,861.22 = 471,384.71/x
  3. Step 3: Cross multiply
    820,311.77x = 1,131,861.22 × 471,384.71
  4. Step 4: Simplify right side
    820,311.77x = 533,542,074,394.19
  5. Step 5: Solve for x
    x = 533,542,074,394.19/820,311.77
  6. Step 6: Final answer
    x = 650,413.77

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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.