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Finding the Fourth Proportional to 557,688.43, 769,614.87 and 303,039.62

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Solution

The fourth proportional to 557,688.43, 769,614.87 and 303,039.62 is: 418,197.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,688.43 : 769,614.87 = 303,039.62 : x
  2. Step 2: Convert to fraction form
    557,688.43/769,614.87 = 303,039.62/x
  3. Step 3: Cross multiply
    557,688.43x = 769,614.87 × 303,039.62
  4. Step 4: Simplify right side
    557,688.43x = 233,223,793,903.08
  5. Step 5: Solve for x
    x = 233,223,793,903.08/557,688.43
  6. Step 6: Final answer
    x = 418,197.30

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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.