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Finding the Third Proportional to 631,090 and 1,388,348

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Solution

The third proportional to 631,090 and 1,388,348 is: 3,054,255.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,090 : 1,388,348 = 1,388,348 : x
  2. Step 2: Convert to fraction form
    631,090/1,388,348 = 1,388,348/x
  3. Step 3: Cross multiply
    631,090x = 1,388,348 × 1,388,348
  4. Step 4: Simplify right side
    631,090x = 1,927,510,169,104
  5. Step 5: Solve for x
    x = 1,927,510,169,104/631,090
  6. Step 6: Final answer
    x = 3,054,255.60

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.