Home / 811,504.80-1,217,257.20-212,464.80

Finding the Fourth Proportional to 811,504.80, 1,217,257.20 and 212,464.80

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Solution

The fourth proportional to 811,504.80, 1,217,257.20 and 212,464.80 is: 318,697.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,504.80 : 1,217,257.20 = 212,464.80 : x
  2. Step 2: Convert to fraction form
    811,504.80/1,217,257.20 = 212,464.80/x
  3. Step 3: Cross multiply
    811,504.80x = 1,217,257.20 × 212,464.80
  4. Step 4: Simplify right side
    811,504.80x = 258,624,307,546.56
  5. Step 5: Solve for x
    x = 258,624,307,546.56/811,504.80
  6. Step 6: Final answer
    x = 318,697.20

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Half scale
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Double scale
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Similar ratio
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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.