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Finding the Fourth Proportional to 618,223.20, 926,816.40 and 322,735.20

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Solution

The fourth proportional to 618,223.20, 926,816.40 and 322,735.20 is: 483,832.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,223.20 : 926,816.40 = 322,735.20 : x
  2. Step 2: Convert to fraction form
    618,223.20/926,816.40 = 322,735.20/x
  3. Step 3: Cross multiply
    618,223.20x = 926,816.40 × 322,735.20
  4. Step 4: Simplify right side
    618,223.20x = 299,116,276,217.28
  5. Step 5: Solve for x
    x = 299,116,276,217.28/618,223.20
  6. Step 6: Final answer
    x = 483,832.18

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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.