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Finding the Fourth Proportional to 484,520.40, 726,694.20 and 306,709.20

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Solution

The fourth proportional to 484,520.40, 726,694.20 and 306,709.20 is: 460,009.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,520.40 : 726,694.20 = 306,709.20 : x
  2. Step 2: Convert to fraction form
    484,520.40/726,694.20 = 306,709.20/x
  3. Step 3: Cross multiply
    484,520.40x = 726,694.20 × 306,709.20
  4. Step 4: Simplify right side
    484,520.40x = 222,883,796,726.64
  5. Step 5: Solve for x
    x = 222,883,796,726.64/484,520.40
  6. Step 6: Final answer
    x = 460,009.11

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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.