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Finding the Third Proportional to 310,226 and 643,492

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Solution

The third proportional to 310,226 and 643,492 is: 1,334,775.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,226 : 643,492 = 643,492 : x
  2. Step 2: Convert to fraction form
    310,226/643,492 = 643,492/x
  3. Step 3: Cross multiply
    310,226x = 643,492 × 643,492
  4. Step 4: Simplify right side
    310,226x = 414,081,954,064
  5. Step 5: Solve for x
    x = 414,081,954,064/310,226
  6. Step 6: Final answer
    x = 1,334,775.14

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.