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Finding the Third Proportional to 372,090 and 815,118

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Solution

The third proportional to 372,090 and 815,118 is: 1,785,636.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,090 : 815,118 = 815,118 : x
  2. Step 2: Convert to fraction form
    372,090/815,118 = 815,118/x
  3. Step 3: Cross multiply
    372,090x = 815,118 × 815,118
  4. Step 4: Simplify right side
    372,090x = 664,417,353,924
  5. Step 5: Solve for x
    x = 664,417,353,924/372,090
  6. Step 6: Final answer
    x = 1,785,636.15

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.