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Finding the Fourth Proportional to 667,348.63, 920,936.53 and 361,417.98

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Solution

The fourth proportional to 667,348.63, 920,936.53 and 361,417.98 is: 498,754.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,348.63 : 920,936.53 = 361,417.98 : x
  2. Step 2: Convert to fraction form
    667,348.63/920,936.53 = 361,417.98/x
  3. Step 3: Cross multiply
    667,348.63x = 920,936.53 × 361,417.98
  4. Step 4: Simplify right side
    667,348.63x = 332,843,020,380.81
  5. Step 5: Solve for x
    x = 332,843,020,380.81/667,348.63
  6. Step 6: Final answer
    x = 498,754.33

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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.