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Finding the Fourth Proportional to 669,458.80, 923,511.54 and 427,486.96

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Solution

The fourth proportional to 669,458.80, 923,511.54 and 427,486.96 is: 589,713.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,458.80 : 923,511.54 = 427,486.96 : x
  2. Step 2: Convert to fraction form
    669,458.80/923,511.54 = 427,486.96/x
  3. Step 3: Cross multiply
    669,458.80x = 923,511.54 × 427,486.96
  4. Step 4: Simplify right side
    669,458.80x = 394,789,140,759.52
  5. Step 5: Solve for x
    x = 394,789,140,759.52/669,458.80
  6. Step 6: Final answer
    x = 589,713.87

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1.5x scale

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.