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Finding the Fourth Proportional to 641,329.14, 884,648.61 and 423,539.82

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Solution

The fourth proportional to 641,329.14, 884,648.61 and 423,539.82 is: 584,230.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,329.14 : 884,648.61 = 423,539.82 : x
  2. Step 2: Convert to fraction form
    641,329.14/884,648.61 = 423,539.82/x
  3. Step 3: Cross multiply
    641,329.14x = 884,648.61 × 423,539.82
  4. Step 4: Simplify right side
    641,329.14x = 374,683,913,042.65
  5. Step 5: Solve for x
    x = 374,683,913,042.65/641,329.14
  6. Step 6: Final answer
    x = 584,230.30

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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.