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Finding the Third Proportional to 403,040 and 879,940

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Solution

The third proportional to 403,040 and 879,940 is: 1,921,135.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,040 : 879,940 = 879,940 : x
  2. Step 2: Convert to fraction form
    403,040/879,940 = 879,940/x
  3. Step 3: Cross multiply
    403,040x = 879,940 × 879,940
  4. Step 4: Simplify right side
    403,040x = 774,294,403,600
  5. Step 5: Solve for x
    x = 774,294,403,600/403,040
  6. Step 6: Final answer
    x = 1,921,135.38

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.