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Finding the Third Proportional to 620,501 and 911,040

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Solution

The third proportional to 620,501 and 911,040 is: 1,337,618.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,501 : 911,040 = 911,040 : x
  2. Step 2: Convert to fraction form
    620,501/911,040 = 911,040/x
  3. Step 3: Cross multiply
    620,501x = 911,040 × 911,040
  4. Step 4: Simplify right side
    620,501x = 829,993,881,600
  5. Step 5: Solve for x
    x = 829,993,881,600/620,501
  6. Step 6: Final answer
    x = 1,337,618.93

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.