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Finding the Third Proportional to 553,147.50 and 851,439

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Solution

The third proportional to 553,147.50 and 851,439 is: 1,310,587.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,147.50 : 851,439 = 851,439 : x
  2. Step 2: Convert to fraction form
    553,147.50/851,439 = 851,439/x
  3. Step 3: Cross multiply
    553,147.50x = 851,439 × 851,439
  4. Step 4: Simplify right side
    553,147.50x = 724,948,370,721
  5. Step 5: Solve for x
    x = 724,948,370,721/553,147.50
  6. Step 6: Final answer
    x = 1,310,587.81

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.