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Finding the Fourth Proportional to 655,990.64, 905,340.61 and 365,628.71

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Solution

The fourth proportional to 655,990.64, 905,340.61 and 365,628.71 is: 504,608.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,990.64 : 905,340.61 = 365,628.71 : x
  2. Step 2: Convert to fraction form
    655,990.64/905,340.61 = 365,628.71/x
  3. Step 3: Cross multiply
    655,990.64x = 905,340.61 × 365,628.71
  4. Step 4: Simplify right side
    655,990.64x = 331,018,519,519.03
  5. Step 5: Solve for x
    x = 331,018,519,519.03/655,990.64
  6. Step 6: Final answer
    x = 504,608.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.