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Finding the Third Proportional to 790,878 and 1,225,639

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Solution

The third proportional to 790,878 and 1,225,639 is: 1,899,396.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,878 : 1,225,639 = 1,225,639 : x
  2. Step 2: Convert to fraction form
    790,878/1,225,639 = 1,225,639/x
  3. Step 3: Cross multiply
    790,878x = 1,225,639 × 1,225,639
  4. Step 4: Simplify right side
    790,878x = 1,502,190,958,321
  5. Step 5: Solve for x
    x = 1,502,190,958,321/790,878
  6. Step 6: Final answer
    x = 1,899,396.57

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Why These Related Problems?

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