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Finding the Fourth Proportional to 449,296.61, 618,975.58 and 313,083.37

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Solution

The fourth proportional to 449,296.61, 618,975.58 and 313,083.37 is: 431,320.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,296.61 : 618,975.58 = 313,083.37 : x
  2. Step 2: Convert to fraction form
    449,296.61/618,975.58 = 313,083.37/x
  3. Step 3: Cross multiply
    449,296.61x = 618,975.58 × 313,083.37
  4. Step 4: Simplify right side
    449,296.61x = 193,790,960,534.11
  5. Step 5: Solve for x
    x = 193,790,960,534.11/449,296.61
  6. Step 6: Final answer
    x = 431,320.77

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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.