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Finding the Third Proportional to 310,437 and 474,678

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Solution

The third proportional to 310,437 and 474,678 is: 725,812.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,437 : 474,678 = 474,678 : x
  2. Step 2: Convert to fraction form
    310,437/474,678 = 474,678/x
  3. Step 3: Cross multiply
    310,437x = 474,678 × 474,678
  4. Step 4: Simplify right side
    310,437x = 225,319,203,684
  5. Step 5: Solve for x
    x = 225,319,203,684/310,437
  6. Step 6: Final answer
    x = 725,812.98

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.