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Finding the Fourth Proportional to 655,217.80, 982,859.10 and 340,289.80

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Solution

The fourth proportional to 655,217.80, 982,859.10 and 340,289.80 is: 510,451.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,217.80 : 982,859.10 = 340,289.80 : x
  2. Step 2: Convert to fraction form
    655,217.80/982,859.10 = 340,289.80/x
  3. Step 3: Cross multiply
    655,217.80x = 982,859.10 × 340,289.80
  4. Step 4: Simplify right side
    655,217.80x = 334,456,926,567.18
  5. Step 5: Solve for x
    x = 334,456,926,567.18/655,217.80
  6. Step 6: Final answer
    x = 510,451.53

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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.