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Finding the Fourth Proportional to 669,435.12, 923,553.36 and 427,654.98

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Solution

The fourth proportional to 669,435.12, 923,553.36 and 427,654.98 is: 589,993.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,435.12 : 923,553.36 = 427,654.98 : x
  2. Step 2: Convert to fraction form
    669,435.12/923,553.36 = 427,654.98/x
  3. Step 3: Cross multiply
    669,435.12x = 923,553.36 × 427,654.98
  4. Step 4: Simplify right side
    669,435.12x = 394,962,193,699.73
  5. Step 5: Solve for x
    x = 394,962,193,699.73/669,435.12
  6. Step 6: Final answer
    x = 589,993.24

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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.