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Finding the Fourth Proportional to 647,804.50, 893,967.90 and 361,324.38

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Solution

The fourth proportional to 647,804.50, 893,967.90 and 361,324.38 is: 498,626.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,804.50 : 893,967.90 = 361,324.38 : x
  2. Step 2: Convert to fraction form
    647,804.50/893,967.90 = 361,324.38/x
  3. Step 3: Cross multiply
    647,804.50x = 893,967.90 × 361,324.38
  4. Step 4: Simplify right side
    647,804.50x = 323,012,397,207.40
  5. Step 5: Solve for x
    x = 323,012,397,207.40/647,804.50
  6. Step 6: Final answer
    x = 498,626.36

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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.