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Finding the Third Proportional to 316,095 and 688,998

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Solution

The third proportional to 316,095 and 688,998 is: 1,501,821.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,095 : 688,998 = 688,998 : x
  2. Step 2: Convert to fraction form
    316,095/688,998 = 688,998/x
  3. Step 3: Cross multiply
    316,095x = 688,998 × 688,998
  4. Step 4: Simplify right side
    316,095x = 474,718,244,004
  5. Step 5: Solve for x
    x = 474,718,244,004/316,095
  6. Step 6: Final answer
    x = 1,501,821.43

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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.