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Finding the Third Proportional to 298,440 and 462,789

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Solution

The third proportional to 298,440 and 462,789 is: 717,643.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,440 : 462,789 = 462,789 : x
  2. Step 2: Convert to fraction form
    298,440/462,789 = 462,789/x
  3. Step 3: Cross multiply
    298,440x = 462,789 × 462,789
  4. Step 4: Simplify right side
    298,440x = 214,173,658,521
  5. Step 5: Solve for x
    x = 214,173,658,521/298,440
  6. Step 6: Final answer
    x = 717,643.94

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.