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Finding the Third Proportional to 288,090 and 628,560

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Solution

The third proportional to 288,090 and 628,560 is: 1,371,403.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,090 : 628,560 = 628,560 : x
  2. Step 2: Convert to fraction form
    288,090/628,560 = 628,560/x
  3. Step 3: Cross multiply
    288,090x = 628,560 × 628,560
  4. Step 4: Simplify right side
    288,090x = 395,087,673,600
  5. Step 5: Solve for x
    x = 395,087,673,600/288,090
  6. Step 6: Final answer
    x = 1,371,403.64

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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.