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Finding the Third Proportional to 189,486 and 408,528

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Solution

The third proportional to 189,486 and 408,528 is: 880,778.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,486 : 408,528 = 408,528 : x
  2. Step 2: Convert to fraction form
    189,486/408,528 = 408,528/x
  3. Step 3: Cross multiply
    189,486x = 408,528 × 408,528
  4. Step 4: Simplify right side
    189,486x = 166,895,126,784
  5. Step 5: Solve for x
    x = 166,895,126,784/189,486
  6. Step 6: Final answer
    x = 880,778.14

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.