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Finding the Fourth Proportional to 605,737.80, 907,622.55 and 521,100.90

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Solution

The fourth proportional to 605,737.80, 907,622.55 and 521,100.90 is: 780,804.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,737.80 : 907,622.55 = 521,100.90 : x
  2. Step 2: Convert to fraction form
    605,737.80/907,622.55 = 521,100.90/x
  3. Step 3: Cross multiply
    605,737.80x = 907,622.55 × 521,100.90
  4. Step 4: Simplify right side
    605,737.80x = 472,962,927,665.30
  5. Step 5: Solve for x
    x = 472,962,927,665.30/605,737.80
  6. Step 6: Final answer
    x = 780,804.71

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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.