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Finding the Fourth Proportional to 550,576.80, 825,865.20 and 382,615.20

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Solution

The fourth proportional to 550,576.80, 825,865.20 and 382,615.20 is: 573,922.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,576.80 : 825,865.20 = 382,615.20 : x
  2. Step 2: Convert to fraction form
    550,576.80/825,865.20 = 382,615.20/x
  3. Step 3: Cross multiply
    550,576.80x = 825,865.20 × 382,615.20
  4. Step 4: Simplify right side
    550,576.80x = 315,988,578,671.04
  5. Step 5: Solve for x
    x = 315,988,578,671.04/550,576.80
  6. Step 6: Final answer
    x = 573,922.80

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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.