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Finding the Fourth Proportional to 484,238.80, 726,358.20 and 445,358.80

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Solution

The fourth proportional to 484,238.80, 726,358.20 and 445,358.80 is: 668,038.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,238.80 : 726,358.20 = 445,358.80 : x
  2. Step 2: Convert to fraction form
    484,238.80/726,358.20 = 445,358.80/x
  3. Step 3: Cross multiply
    484,238.80x = 726,358.20 × 445,358.80
  4. Step 4: Simplify right side
    484,238.80x = 323,490,016,322.16
  5. Step 5: Solve for x
    x = 323,490,016,322.16/484,238.80
  6. Step 6: Final answer
    x = 668,038.20

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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.