Home / 819,905.55-1,228,702.23-387,161.28

Finding the Fourth Proportional to 819,905.55, 1,228,702.23 and 387,161.28

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Solution

The fourth proportional to 819,905.55, 1,228,702.23 and 387,161.28 is: 580,196.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,905.55 : 1,228,702.23 = 387,161.28 : x
  2. Step 2: Convert to fraction form
    819,905.55/1,228,702.23 = 387,161.28/x
  3. Step 3: Cross multiply
    819,905.55x = 1,228,702.23 × 387,161.28
  4. Step 4: Simplify right side
    819,905.55x = 475,705,928,105.65
  5. Step 5: Solve for x
    x = 475,705,928,105.65/819,905.55
  6. Step 6: Final answer
    x = 580,196.01

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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.