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Finding the Fourth Proportional to 667,010.65, 920,473.71 and 361,085.53

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Solution

The fourth proportional to 667,010.65, 920,473.71 and 361,085.53 is: 498,297.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,010.65 : 920,473.71 = 361,085.53 : x
  2. Step 2: Convert to fraction form
    667,010.65/920,473.71 = 361,085.53/x
  3. Step 3: Cross multiply
    667,010.65x = 920,473.71 × 361,085.53
  4. Step 4: Simplify right side
    667,010.65x = 332,369,737,426.42
  5. Step 5: Solve for x
    x = 332,369,737,426.42/667,010.65
  6. Step 6: Final answer
    x = 498,297.50

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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.