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Finding the Fourth Proportional to 419,366.65, 627,819.78 and 376,080.46

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Solution

The fourth proportional to 419,366.65, 627,819.78 and 376,080.46 is: 563,017.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,366.65 : 627,819.78 = 376,080.46 : x
  2. Step 2: Convert to fraction form
    419,366.65/627,819.78 = 376,080.46/x
  3. Step 3: Cross multiply
    419,366.65x = 627,819.78 × 376,080.46
  4. Step 4: Simplify right side
    419,366.65x = 236,110,751,659.50
  5. Step 5: Solve for x
    x = 236,110,751,659.50/419,366.65
  6. Step 6: Final answer
    x = 563,017.47

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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.