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Finding the Fourth Proportional to 382,428.78, 575,919.72 and 333,104.64

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Solution

The fourth proportional to 382,428.78, 575,919.72 and 333,104.64 is: 501,639.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,428.78 : 575,919.72 = 333,104.64 : x
  2. Step 2: Convert to fraction form
    382,428.78/575,919.72 = 333,104.64/x
  3. Step 3: Cross multiply
    382,428.78x = 575,919.72 × 333,104.64
  4. Step 4: Simplify right side
    382,428.78x = 191,841,528,839.80
  5. Step 5: Solve for x
    x = 191,841,528,839.80/382,428.78
  6. Step 6: Final answer
    x = 501,639.89

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.