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Finding the Fourth Proportional to 655,043.20, 982,564.80 and 322,550.40

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Solution

The fourth proportional to 655,043.20, 982,564.80 and 322,550.40 is: 483,825.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,043.20 : 982,564.80 = 322,550.40 : x
  2. Step 2: Convert to fraction form
    655,043.20/982,564.80 = 322,550.40/x
  3. Step 3: Cross multiply
    655,043.20x = 982,564.80 × 322,550.40
  4. Step 4: Simplify right side
    655,043.20x = 316,926,669,265.92
  5. Step 5: Solve for x
    x = 316,926,669,265.92/655,043.20
  6. Step 6: Final answer
    x = 483,825.60

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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.