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Finding the Third Proportional to 620,640 and 885,881

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Solution

The third proportional to 620,640 and 885,881 is: 1,264,477.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,640 : 885,881 = 885,881 : x
  2. Step 2: Convert to fraction form
    620,640/885,881 = 885,881/x
  3. Step 3: Cross multiply
    620,640x = 885,881 × 885,881
  4. Step 4: Simplify right side
    620,640x = 784,785,146,161
  5. Step 5: Solve for x
    x = 784,785,146,161/620,640
  6. Step 6: Final answer
    x = 1,264,477.23

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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.