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Finding the Third Proportional to 638,087.63 and 988,503.19

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Solution

The third proportional to 638,087.63 and 988,503.19 is: 1,531,354.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,087.63 : 988,503.19 = 988,503.19 : x
  2. Step 2: Convert to fraction form
    638,087.63/988,503.19 = 988,503.19/x
  3. Step 3: Cross multiply
    638,087.63x = 988,503.19 × 988,503.19
  4. Step 4: Simplify right side
    638,087.63x = 977,138,551,697.66
  5. Step 5: Solve for x
    x = 977,138,551,697.66/638,087.63
  6. Step 6: Final answer
    x = 1,531,354.81

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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.