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Finding the Third Proportional to 428,901.75 and 928,412.25

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Solution

The third proportional to 428,901.75 and 928,412.25 is: 2,009,666.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,901.75 : 928,412.25 = 928,412.25 : x
  2. Step 2: Convert to fraction form
    428,901.75/928,412.25 = 928,412.25/x
  3. Step 3: Cross multiply
    428,901.75x = 928,412.25 × 928,412.25
  4. Step 4: Simplify right side
    428,901.75x = 861,949,305,950.06
  5. Step 5: Solve for x
    x = 861,949,305,950.06/428,901.75
  6. Step 6: Final answer
    x = 2,009,666.10

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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.