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Finding the Fourth Proportional to 511,380.17, 705,787.90 and 307,637.03

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Solution

The fourth proportional to 511,380.17, 705,787.90 and 307,637.03 is: 424,589.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,380.17 : 705,787.90 = 307,637.03 : x
  2. Step 2: Convert to fraction form
    511,380.17/705,787.90 = 307,637.03/x
  3. Step 3: Cross multiply
    511,380.17x = 705,787.90 × 307,637.03
  4. Step 4: Simplify right side
    511,380.17x = 217,126,494,513.98
  5. Step 5: Solve for x
    x = 217,126,494,513.98/511,380.17
  6. Step 6: Final answer
    x = 424,589.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.