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Finding the Fourth Proportional to 631,784.34, 871,761.57 and 359,857.53

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Solution

The fourth proportional to 631,784.34, 871,761.57 and 359,857.53 is: 496,545.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,784.34 : 871,761.57 = 359,857.53 : x
  2. Step 2: Convert to fraction form
    631,784.34/871,761.57 = 359,857.53/x
  3. Step 3: Cross multiply
    631,784.34x = 871,761.57 × 359,857.53
  4. Step 4: Simplify right side
    631,784.34x = 313,709,965,329.12
  5. Step 5: Solve for x
    x = 313,709,965,329.12/631,784.34
  6. Step 6: Final answer
    x = 496,545.97

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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.