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Finding the Third Proportional to 285,290 and 441,511

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Solution

The third proportional to 285,290 and 441,511 is: 683,276.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,290 : 441,511 = 441,511 : x
  2. Step 2: Convert to fraction form
    285,290/441,511 = 441,511/x
  3. Step 3: Cross multiply
    285,290x = 441,511 × 441,511
  4. Step 4: Simplify right side
    285,290x = 194,931,963,121
  5. Step 5: Solve for x
    x = 194,931,963,121/285,290
  6. Step 6: Final answer
    x = 683,276.54

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.