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Finding the Fourth Proportional to 520,096.30, 779,712.45 and 220,806.70

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Solution

The fourth proportional to 520,096.30, 779,712.45 and 220,806.70 is: 331,026.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,096.30 : 779,712.45 = 220,806.70 : x
  2. Step 2: Convert to fraction form
    520,096.30/779,712.45 = 220,806.70/x
  3. Step 3: Cross multiply
    520,096.30x = 779,712.45 × 220,806.70
  4. Step 4: Simplify right side
    520,096.30x = 172,165,733,033.42
  5. Step 5: Solve for x
    x = 172,165,733,033.42/520,096.30
  6. Step 6: Final answer
    x = 331,026.64

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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.