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Finding the Fourth Proportional to 663,104, 915,083.54 and 361,298

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Solution

The fourth proportional to 663,104, 915,083.54 and 361,298 is: 498,591.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,104 : 915,083.54 = 361,298 : x
  2. Step 2: Convert to fraction form
    663,104/915,083.54 = 361,298/x
  3. Step 3: Cross multiply
    663,104x = 915,083.54 × 361,298
  4. Step 4: Simplify right side
    663,104x = 330,617,852,834.92
  5. Step 5: Solve for x
    x = 330,617,852,834.92/663,104
  6. Step 6: Final answer
    x = 498,591.25

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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.