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Finding the Third Proportional to 620,638 and 885,878

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Solution

The third proportional to 620,638 and 885,878 is: 1,264,472.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,638 : 885,878 = 885,878 : x
  2. Step 2: Convert to fraction form
    620,638/885,878 = 885,878/x
  3. Step 3: Cross multiply
    620,638x = 885,878 × 885,878
  4. Step 4: Simplify right side
    620,638x = 784,779,830,884
  5. Step 5: Solve for x
    x = 784,779,830,884/620,638
  6. Step 6: Final answer
    x = 1,264,472.74

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.