Home / 768,553.27-1,151,362.91-430,571.56

Finding the Fourth Proportional to 768,553.27, 1,151,362.91 and 430,571.56

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Solution

The fourth proportional to 768,553.27, 1,151,362.91 and 430,571.56 is: 645,035.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,553.27 : 1,151,362.91 = 430,571.56 : x
  2. Step 2: Convert to fraction form
    768,553.27/1,151,362.91 = 430,571.56/x
  3. Step 3: Cross multiply
    768,553.27x = 1,151,362.91 × 430,571.56
  4. Step 4: Simplify right side
    768,553.27x = 495,744,123,838.81
  5. Step 5: Solve for x
    x = 495,744,123,838.81/768,553.27
  6. Step 6: Final answer
    x = 645,035.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.