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Finding the Fourth Proportional to 612,474.62, 918,898.43 and 313,165.44

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Solution

The fourth proportional to 612,474.62, 918,898.43 and 313,165.44 is: 469,843.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,474.62 : 918,898.43 = 313,165.44 : x
  2. Step 2: Convert to fraction form
    612,474.62/918,898.43 = 313,165.44/x
  3. Step 3: Cross multiply
    612,474.62x = 918,898.43 × 313,165.44
  4. Step 4: Simplify right side
    612,474.62x = 287,767,229,580.43
  5. Step 5: Solve for x
    x = 287,767,229,580.43/612,474.62
  6. Step 6: Final answer
    x = 469,843.52

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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.