Home / 811,450.94-1,217,287.14-338,025.58

Finding the Fourth Proportional to 811,450.94, 1,217,287.14 and 338,025.58

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Solution

The fourth proportional to 811,450.94, 1,217,287.14 and 338,025.58 is: 507,084.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,450.94 : 1,217,287.14 = 338,025.58 : x
  2. Step 2: Convert to fraction form
    811,450.94/1,217,287.14 = 338,025.58/x
  3. Step 3: Cross multiply
    811,450.94x = 1,217,287.14 × 338,025.58
  4. Step 4: Simplify right side
    811,450.94x = 411,474,191,525.04
  5. Step 5: Solve for x
    x = 411,474,191,525.04/811,450.94
  6. Step 6: Final answer
    x = 507,084.50

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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.