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Finding the Fourth Proportional to 547,684.30, 821,332.05 and 379,204.30

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Solution

The fourth proportional to 547,684.30, 821,332.05 and 379,204.30 is: 568,671.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,684.30 : 821,332.05 = 379,204.30 : x
  2. Step 2: Convert to fraction form
    547,684.30/821,332.05 = 379,204.30/x
  3. Step 3: Cross multiply
    547,684.30x = 821,332.05 × 379,204.30
  4. Step 4: Simplify right side
    547,684.30x = 311,452,645,087.82
  5. Step 5: Solve for x
    x = 311,452,645,087.82/547,684.30
  6. Step 6: Final answer
    x = 568,671.85

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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.