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Finding the Third Proportional to 489,240.84 and 740,628.56

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Solution

The third proportional to 489,240.84 and 740,628.56 is: 1,121,187.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,240.84 : 740,628.56 = 740,628.56 : x
  2. Step 2: Convert to fraction form
    489,240.84/740,628.56 = 740,628.56/x
  3. Step 3: Cross multiply
    489,240.84x = 740,628.56 × 740,628.56
  4. Step 4: Simplify right side
    489,240.84x = 548,530,667,590.82
  5. Step 5: Solve for x
    x = 548,530,667,590.82/489,240.84
  6. Step 6: Final answer
    x = 1,121,187.40

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.