Home / 1,276,911.92-1,915,374.78-378,361.43

Finding the Fourth Proportional to 1,276,911.92, 1,915,374.78 and 378,361.43

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Solution

The fourth proportional to 1,276,911.92, 1,915,374.78 and 378,361.43 is: 567,544.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276,911.92 : 1,915,374.78 = 378,361.43 : x
  2. Step 2: Convert to fraction form
    1,276,911.92/1,915,374.78 = 378,361.43/x
  3. Step 3: Cross multiply
    1,276,911.92x = 1,915,374.78 × 378,361.43
  4. Step 4: Simplify right side
    1,276,911.92x = 724,703,931,169.86
  5. Step 5: Solve for x
    x = 724,703,931,169.86/1,276,911.92
  6. Step 6: Final answer
    x = 567,544.18

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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.