Home / 820,319.27-1,131,871.55-471,392.20

Finding the Fourth Proportional to 820,319.27, 1,131,871.55 and 471,392.20

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Solution

The fourth proportional to 820,319.27, 1,131,871.55 and 471,392.20 is: 650,424.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,319.27 : 1,131,871.55 = 471,392.20 : x
  2. Step 2: Convert to fraction form
    820,319.27/1,131,871.55 = 471,392.20/x
  3. Step 3: Cross multiply
    820,319.27x = 1,131,871.55 × 471,392.20
  4. Step 4: Simplify right side
    820,319.27x = 533,555,414,885.27
  5. Step 5: Solve for x
    x = 533,555,414,885.27/820,319.27
  6. Step 6: Final answer
    x = 650,424.09

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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.