Home / 820,321.20-1,131,874.20-471,394.20

Finding the Fourth Proportional to 820,321.20, 1,131,874.20 and 471,394.20

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Solution

The fourth proportional to 820,321.20, 1,131,874.20 and 471,394.20 is: 650,426.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,321.20 : 1,131,874.20 = 471,394.20 : x
  2. Step 2: Convert to fraction form
    820,321.20/1,131,874.20 = 471,394.20/x
  3. Step 3: Cross multiply
    820,321.20x = 1,131,874.20 × 471,394.20
  4. Step 4: Simplify right side
    820,321.20x = 533,558,933,009.64
  5. Step 5: Solve for x
    x = 533,558,933,009.64/820,321.20
  6. Step 6: Final answer
    x = 650,426.85

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1.5x scale

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.