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Finding the Fourth Proportional to 1,347,773.78, 1,859,920.43 and 735,922.21

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Solution

The fourth proportional to 1,347,773.78, 1,859,920.43 and 735,922.21 is: 1,015,568.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,347,773.78 : 1,859,920.43 = 735,922.21 : x
  2. Step 2: Convert to fraction form
    1,347,773.78/1,859,920.43 = 735,922.21/x
  3. Step 3: Cross multiply
    1,347,773.78x = 1,859,920.43 × 735,922.21
  4. Step 4: Simplify right side
    1,347,773.78x = 1,368,756,744,940.34
  5. Step 5: Solve for x
    x = 1,368,756,744,940.34/1,347,773.78
  6. Step 6: Final answer
    x = 1,015,568.61

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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.