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Finding the Third Proportional to 840,090 and 1,266,210

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Solution

The third proportional to 840,090 and 1,266,210 is: 1,908,471.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,090 : 1,266,210 = 1,266,210 : x
  2. Step 2: Convert to fraction form
    840,090/1,266,210 = 1,266,210/x
  3. Step 3: Cross multiply
    840,090x = 1,266,210 × 1,266,210
  4. Step 4: Simplify right side
    840,090x = 1,603,287,764,100
  5. Step 5: Solve for x
    x = 1,603,287,764,100/840,090
  6. Step 6: Final answer
    x = 1,908,471.43

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.