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Finding the Third Proportional to 1,368,972 and 2,128,129.50

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Solution

The third proportional to 1,368,972 and 2,128,129.50 is: 3,308,274.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,368,972 : 2,128,129.50 = 2,128,129.50 : x
  2. Step 2: Convert to fraction form
    1,368,972/2,128,129.50 = 2,128,129.50/x
  3. Step 3: Cross multiply
    1,368,972x = 2,128,129.50 × 2,128,129.50
  4. Step 4: Simplify right side
    1,368,972x = 4,528,935,168,770.25
  5. Step 5: Solve for x
    x = 4,528,935,168,770.25/1,368,972
  6. Step 6: Final answer
    x = 3,308,274.51

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