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Finding the Fourth Proportional to 520,200.70, 779,717.85 and 220,630.30

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Solution

The fourth proportional to 520,200.70, 779,717.85 and 220,630.30 is: 330,698.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,200.70 : 779,717.85 = 220,630.30 : x
  2. Step 2: Convert to fraction form
    520,200.70/779,717.85 = 220,630.30/x
  3. Step 3: Cross multiply
    520,200.70x = 779,717.85 × 220,630.30
  4. Step 4: Simplify right side
    520,200.70x = 172,029,383,160.86
  5. Step 5: Solve for x
    x = 172,029,383,160.86/520,200.70
  6. Step 6: Final answer
    x = 330,698.10

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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.