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Finding the Fourth Proportional to 519,644.20, 778,883.10 and 220,073.80

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Solution

The fourth proportional to 519,644.20, 778,883.10 and 220,073.80 is: 329,863.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,644.20 : 778,883.10 = 220,073.80 : x
  2. Step 2: Convert to fraction form
    519,644.20/778,883.10 = 220,073.80/x
  3. Step 3: Cross multiply
    519,644.20x = 778,883.10 × 220,073.80
  4. Step 4: Simplify right side
    519,644.20x = 171,411,763,572.78
  5. Step 5: Solve for x
    x = 171,411,763,572.78/519,644.20
  6. Step 6: Final answer
    x = 329,863.71

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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.