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Finding the Fourth Proportional to 547,292.20, 819,188.70 and 389,828.20

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Solution

The fourth proportional to 547,292.20, 819,188.70 and 389,828.20 is: 583,496.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,292.20 : 819,188.70 = 389,828.20 : x
  2. Step 2: Convert to fraction form
    547,292.20/819,188.70 = 389,828.20/x
  3. Step 3: Cross multiply
    547,292.20x = 819,188.70 × 389,828.20
  4. Step 4: Simplify right side
    547,292.20x = 319,342,856,381.34
  5. Step 5: Solve for x
    x = 319,342,856,381.34/547,292.20
  6. Step 6: Final answer
    x = 583,496.09

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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.