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Finding the Third Proportional to 638,047.13 and 987,926.63

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Solution

The third proportional to 638,047.13 and 987,926.63 is: 1,529,666.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,047.13 : 987,926.63 = 987,926.63 : x
  2. Step 2: Convert to fraction form
    638,047.13/987,926.63 = 987,926.63/x
  3. Step 3: Cross multiply
    638,047.13x = 987,926.63 × 987,926.63
  4. Step 4: Simplify right side
    638,047.13x = 975,999,016,383.89
  5. Step 5: Solve for x
    x = 975,999,016,383.89/638,047.13
  6. Step 6: Final answer
    x = 1,529,666.04

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.