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Finding the Fourth Proportional to 557,660.96, 769,576.85 and 303,012.15

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Solution

The fourth proportional to 557,660.96, 769,576.85 and 303,012.15 is: 418,159.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,660.96 : 769,576.85 = 303,012.15 : x
  2. Step 2: Convert to fraction form
    557,660.96/769,576.85 = 303,012.15/x
  3. Step 3: Cross multiply
    557,660.96x = 769,576.85 × 303,012.15
  4. Step 4: Simplify right side
    557,660.96x = 233,191,135,908.73
  5. Step 5: Solve for x
    x = 233,191,135,908.73/557,660.96
  6. Step 6: Final answer
    x = 418,159.33

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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.