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Finding the Fourth Proportional to 609,497.28, 910,539.48 and 394,513.92

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Solution

The fourth proportional to 609,497.28, 910,539.48 and 394,513.92 is: 589,371.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,497.28 : 910,539.48 = 394,513.92 : x
  2. Step 2: Convert to fraction form
    609,497.28/910,539.48 = 394,513.92/x
  3. Step 3: Cross multiply
    609,497.28x = 910,539.48 × 394,513.92
  4. Step 4: Simplify right side
    609,497.28x = 359,220,499,569.56
  5. Step 5: Solve for x
    x = 359,220,499,569.56/609,497.28
  6. Step 6: Final answer
    x = 589,371.78

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.