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Finding the Third Proportional to 316,917 and 434,547

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Solution

The third proportional to 316,917 and 434,547 is: 595,837.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,917 : 434,547 = 434,547 : x
  2. Step 2: Convert to fraction form
    316,917/434,547 = 434,547/x
  3. Step 3: Cross multiply
    316,917x = 434,547 × 434,547
  4. Step 4: Simplify right side
    316,917x = 188,831,095,209
  5. Step 5: Solve for x
    x = 188,831,095,209/316,917
  6. Step 6: Final answer
    x = 595,837.70

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.