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Finding the Fourth Proportional to 922,056, 1,383,628.32 and 389,542.56

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Solution

The fourth proportional to 922,056, 1,383,628.32 and 389,542.56 is: 584,543.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,056 : 1,383,628.32 = 389,542.56 : x
  2. Step 2: Convert to fraction form
    922,056/1,383,628.32 = 389,542.56/x
  3. Step 3: Cross multiply
    922,056x = 1,383,628.32 × 389,542.56
  4. Step 4: Simplify right side
    922,056x = 538,982,117,861.30
  5. Step 5: Solve for x
    x = 538,982,117,861.30/922,056
  6. Step 6: Final answer
    x = 584,543.80

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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.