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Finding the Fourth Proportional to 909,894.22, 1,364,792.04 and 278,809.87

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Solution

The fourth proportional to 909,894.22, 1,364,792.04 and 278,809.87 is: 418,199.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,894.22 : 1,364,792.04 = 278,809.87 : x
  2. Step 2: Convert to fraction form
    909,894.22/1,364,792.04 = 278,809.87/x
  3. Step 3: Cross multiply
    909,894.22x = 1,364,792.04 × 278,809.87
  4. Step 4: Simplify right side
    909,894.22x = 380,517,491,249.44
  5. Step 5: Solve for x
    x = 380,517,491,249.44/909,894.22
  6. Step 6: Final answer
    x = 418,199.70

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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.