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Finding the Fourth Proportional to 419,716.15, 577,880.26 and 381,360.89

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Solution

The fourth proportional to 419,716.15, 577,880.26 and 381,360.89 is: 525,071.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,716.15 : 577,880.26 = 381,360.89 : x
  2. Step 2: Convert to fraction form
    419,716.15/577,880.26 = 381,360.89/x
  3. Step 3: Cross multiply
    419,716.15x = 577,880.26 × 381,360.89
  4. Step 4: Simplify right side
    419,716.15x = 220,380,930,758.33
  5. Step 5: Solve for x
    x = 220,380,930,758.33/419,716.15
  6. Step 6: Final answer
    x = 525,071.37

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1.5x scale

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.