Home / 811,938.40-1,217,907.60-251,144.80

Finding the Fourth Proportional to 811,938.40, 1,217,907.60 and 251,144.80

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Solution

The fourth proportional to 811,938.40, 1,217,907.60 and 251,144.80 is: 376,717.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,938.40 : 1,217,907.60 = 251,144.80 : x
  2. Step 2: Convert to fraction form
    811,938.40/1,217,907.60 = 251,144.80/x
  3. Step 3: Cross multiply
    811,938.40x = 1,217,907.60 × 251,144.80
  4. Step 4: Simplify right side
    811,938.40x = 305,871,160,620.48
  5. Step 5: Solve for x
    x = 305,871,160,620.48/811,938.40
  6. Step 6: Final answer
    x = 376,717.20

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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.