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Finding the Fourth Proportional to 547,314.20, 819,221.70 and 389,850.20

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Solution

The fourth proportional to 547,314.20, 819,221.70 and 389,850.20 is: 583,529.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,314.20 : 819,221.70 = 389,850.20 : x
  2. Step 2: Convert to fraction form
    547,314.20/819,221.70 = 389,850.20/x
  3. Step 3: Cross multiply
    547,314.20x = 819,221.70 × 389,850.20
  4. Step 4: Simplify right side
    547,314.20x = 319,373,743,589.34
  5. Step 5: Solve for x
    x = 319,373,743,589.34/547,314.20
  6. Step 6: Final answer
    x = 583,529.07

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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.