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Finding the Fourth Proportional to 667,447.64, 920,823.51 and 493,435.67

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Solution

The fourth proportional to 667,447.64, 920,823.51 and 493,435.67 is: 680,753.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,447.64 : 920,823.51 = 493,435.67 : x
  2. Step 2: Convert to fraction form
    667,447.64/920,823.51 = 493,435.67/x
  3. Step 3: Cross multiply
    667,447.64x = 920,823.51 × 493,435.67
  4. Step 4: Simplify right side
    667,447.64x = 454,367,165,608.60
  5. Step 5: Solve for x
    x = 454,367,165,608.60/667,447.64
  6. Step 6: Final answer
    x = 680,753.27

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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.