Home / 811,912.40-1,217,868.60-251,118.80

Finding the Fourth Proportional to 811,912.40, 1,217,868.60 and 251,118.80

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Solution

The fourth proportional to 811,912.40, 1,217,868.60 and 251,118.80 is: 376,678.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,912.40 : 1,217,868.60 = 251,118.80 : x
  2. Step 2: Convert to fraction form
    811,912.40/1,217,868.60 = 251,118.80/x
  3. Step 3: Cross multiply
    811,912.40x = 1,217,868.60 × 251,118.80
  4. Step 4: Simplify right side
    811,912.40x = 305,829,701,389.68
  5. Step 5: Solve for x
    x = 305,829,701,389.68/811,912.40
  6. Step 6: Final answer
    x = 376,678.20

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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.