Home / 866,732.40-1,299,223.80-393,757.20

Finding the Fourth Proportional to 866,732.40, 1,299,223.80 and 393,757.20

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Solution

The fourth proportional to 866,732.40, 1,299,223.80 and 393,757.20 is: 590,238.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,732.40 : 1,299,223.80 = 393,757.20 : x
  2. Step 2: Convert to fraction form
    866,732.40/1,299,223.80 = 393,757.20/x
  3. Step 3: Cross multiply
    866,732.40x = 1,299,223.80 × 393,757.20
  4. Step 4: Simplify right side
    866,732.40x = 511,578,725,661.36
  5. Step 5: Solve for x
    x = 511,578,725,661.36/866,732.40
  6. Step 6: Final answer
    x = 590,238.38

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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.