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Finding the Fourth Proportional to 667,271.93, 920,835.74 and 361,350.72

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Solution

The fourth proportional to 667,271.93, 920,835.74 and 361,350.72 is: 498,664.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,271.93 : 920,835.74 = 361,350.72 : x
  2. Step 2: Convert to fraction form
    667,271.93/920,835.74 = 361,350.72/x
  3. Step 3: Cross multiply
    667,271.93x = 920,835.74 × 361,350.72
  4. Step 4: Simplify right side
    667,271.93x = 332,744,658,554.11
  5. Step 5: Solve for x
    x = 332,744,658,554.11/667,271.93
  6. Step 6: Final answer
    x = 498,664.26

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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.