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Finding the Third Proportional to 553,100 and 879,470

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Solution

The third proportional to 553,100 and 879,470 is: 1,398,422.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,100 : 879,470 = 879,470 : x
  2. Step 2: Convert to fraction form
    553,100/879,470 = 879,470/x
  3. Step 3: Cross multiply
    553,100x = 879,470 × 879,470
  4. Step 4: Simplify right side
    553,100x = 773,467,480,900
  5. Step 5: Solve for x
    x = 773,467,480,900/553,100
  6. Step 6: Final answer
    x = 1,398,422.49

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.