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Finding the Fourth Proportional to 419,329.65, 627,764.29 and 376,043.45

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Solution

The fourth proportional to 419,329.65, 627,764.29 and 376,043.45 is: 562,961.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,329.65 : 627,764.29 = 376,043.45 : x
  2. Step 2: Convert to fraction form
    419,329.65/627,764.29 = 376,043.45/x
  3. Step 3: Cross multiply
    419,329.65x = 627,764.29 × 376,043.45
  4. Step 4: Simplify right side
    419,329.65x = 236,066,650,027.70
  5. Step 5: Solve for x
    x = 236,066,650,027.70/419,329.65
  6. Step 6: Final answer
    x = 562,961.98

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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.