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Finding the Third Proportional to 279,927,956 and 394,028,472

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Solution

The third proportional to 279,927,956 and 394,028,472 is: 554,637,125.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,927,956 : 394,028,472 = 394,028,472 : x
  2. Step 2: Convert to fraction form
    279,927,956/394,028,472 = 394,028,472/x
  3. Step 3: Cross multiply
    279,927,956x = 394,028,472 × 394,028,472
  4. Step 4: Simplify right side
    279,927,956x = 155,258,436,746,654,784
  5. Step 5: Solve for x
    x = 155,258,436,746,654,784/279,927,956
  6. Step 6: Final answer
    x = 554,637,125.08

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.