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Finding the Fourth Proportional to 655,245.60, 982,868.40 and 521,401.20

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Solution

The fourth proportional to 655,245.60, 982,868.40 and 521,401.20 is: 782,101.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,245.60 : 982,868.40 = 521,401.20 : x
  2. Step 2: Convert to fraction form
    655,245.60/982,868.40 = 521,401.20/x
  3. Step 3: Cross multiply
    655,245.60x = 982,868.40 × 521,401.20
  4. Step 4: Simplify right side
    655,245.60x = 512,468,763,202.08
  5. Step 5: Solve for x
    x = 512,468,763,202.08/655,245.60
  6. Step 6: Final answer
    x = 782,101.80

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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.