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Finding the Fourth Proportional to 424,496.85, 636,745.27 and 290,972.31

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Solution

The fourth proportional to 424,496.85, 636,745.27 and 290,972.31 is: 436,458.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,496.85 : 636,745.27 = 290,972.31 : x
  2. Step 2: Convert to fraction form
    424,496.85/636,745.27 = 290,972.31/x
  3. Step 3: Cross multiply
    424,496.85x = 636,745.27 × 290,972.31
  4. Step 4: Simplify right side
    424,496.85x = 185,275,242,093.47
  5. Step 5: Solve for x
    x = 185,275,242,093.47/424,496.85
  6. Step 6: Final answer
    x = 436,458.46

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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.