Home / 811,154.44-1,216,902.98-305,704.72

Finding the Fourth Proportional to 811,154.44, 1,216,902.98 and 305,704.72

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Solution

The fourth proportional to 811,154.44, 1,216,902.98 and 305,704.72 is: 458,621.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,154.44 : 1,216,902.98 = 305,704.72 : x
  2. Step 2: Convert to fraction form
    811,154.44/1,216,902.98 = 305,704.72/x
  3. Step 3: Cross multiply
    811,154.44x = 1,216,902.98 × 305,704.72
  4. Step 4: Simplify right side
    811,154.44x = 372,012,984,768.07
  5. Step 5: Solve for x
    x = 372,012,984,768.07/811,154.44
  6. Step 6: Final answer
    x = 458,621.65

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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.