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Finding the Fourth Proportional to 806,963.72, 1,210,989.90 and 333,647.24

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Solution

The fourth proportional to 806,963.72, 1,210,989.90 and 333,647.24 is: 500,695.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,963.72 : 1,210,989.90 = 333,647.24 : x
  2. Step 2: Convert to fraction form
    806,963.72/1,210,989.90 = 333,647.24/x
  3. Step 3: Cross multiply
    806,963.72x = 1,210,989.90 × 333,647.24
  4. Step 4: Simplify right side
    806,963.72x = 404,043,437,802.88
  5. Step 5: Solve for x
    x = 404,043,437,802.88/806,963.72
  6. Step 6: Final answer
    x = 500,695.91

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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.