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Finding the Fourth Proportional to 655,216.80, 982,857.60 and 340,288.80

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Solution

The fourth proportional to 655,216.80, 982,857.60 and 340,288.80 is: 510,450.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,216.80 : 982,857.60 = 340,288.80 : x
  2. Step 2: Convert to fraction form
    655,216.80/982,857.60 = 340,288.80/x
  3. Step 3: Cross multiply
    655,216.80x = 982,857.60 × 340,288.80
  4. Step 4: Simplify right side
    655,216.80x = 334,455,433,274.88
  5. Step 5: Solve for x
    x = 334,455,433,274.88/655,216.80
  6. Step 6: Final answer
    x = 510,450.03

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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.