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Finding the Third Proportional to 642,236 and 1,000,130

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Solution

The third proportional to 642,236 and 1,000,130 is: 1,557,464.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,236 : 1,000,130 = 1,000,130 : x
  2. Step 2: Convert to fraction form
    642,236/1,000,130 = 1,000,130/x
  3. Step 3: Cross multiply
    642,236x = 1,000,130 × 1,000,130
  4. Step 4: Simplify right side
    642,236x = 1,000,260,016,900
  5. Step 5: Solve for x
    x = 1,000,260,016,900/642,236
  6. Step 6: Final answer
    x = 1,557,464.88

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.