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Finding the Fourth Proportional to 484,712.40, 726,982.20 and 306,901.20

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Solution

The fourth proportional to 484,712.40, 726,982.20 and 306,901.20 is: 460,297.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,712.40 : 726,982.20 = 306,901.20 : x
  2. Step 2: Convert to fraction form
    484,712.40/726,982.20 = 306,901.20/x
  3. Step 3: Cross multiply
    484,712.40x = 726,982.20 × 306,901.20
  4. Step 4: Simplify right side
    484,712.40x = 223,111,709,558.64
  5. Step 5: Solve for x
    x = 223,111,709,558.64/484,712.40
  6. Step 6: Final answer
    x = 460,297.09

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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.