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Finding the Third Proportional to 328,584 and 706,240

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Solution

The third proportional to 328,584 and 706,240 is: 1,517,952.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,584 : 706,240 = 706,240 : x
  2. Step 2: Convert to fraction form
    328,584/706,240 = 706,240/x
  3. Step 3: Cross multiply
    328,584x = 706,240 × 706,240
  4. Step 4: Simplify right side
    328,584x = 498,774,937,600
  5. Step 5: Solve for x
    x = 498,774,937,600/328,584
  6. Step 6: Final answer
    x = 1,517,952.60

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.