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Finding the Third Proportional to 423,432 and 915,984

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Solution

The third proportional to 423,432 and 915,984 is: 1,981,490.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,432 : 915,984 = 915,984 : x
  2. Step 2: Convert to fraction form
    423,432/915,984 = 915,984/x
  3. Step 3: Cross multiply
    423,432x = 915,984 × 915,984
  4. Step 4: Simplify right side
    423,432x = 839,026,688,256
  5. Step 5: Solve for x
    x = 839,026,688,256/423,432
  6. Step 6: Final answer
    x = 1,981,490.98

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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.