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Finding the Third Proportional to 438,433.50 and 698,170.50

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Solution

The third proportional to 438,433.50 and 698,170.50 is: 1,111,781.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,433.50 : 698,170.50 = 698,170.50 : x
  2. Step 2: Convert to fraction form
    438,433.50/698,170.50 = 698,170.50/x
  3. Step 3: Cross multiply
    438,433.50x = 698,170.50 × 698,170.50
  4. Step 4: Simplify right side
    438,433.50x = 487,442,047,070.25
  5. Step 5: Solve for x
    x = 487,442,047,070.25/438,433.50
  6. Step 6: Final answer
    x = 1,111,781.03

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.