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Finding the Fourth Proportional to 605,366.50, 905,807.76 and 378,922.90

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Solution

The fourth proportional to 605,366.50, 905,807.76 and 378,922.90 is: 566,981.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,366.50 : 905,807.76 = 378,922.90 : x
  2. Step 2: Convert to fraction form
    605,366.50/905,807.76 = 378,922.90/x
  3. Step 3: Cross multiply
    605,366.50x = 905,807.76 × 378,922.90
  4. Step 4: Simplify right side
    605,366.50x = 343,231,303,261.70
  5. Step 5: Solve for x
    x = 343,231,303,261.70/605,366.50
  6. Step 6: Final answer
    x = 566,981.00

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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.