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Finding the Fourth Proportional to 669,005.80, 923,158.50 and 378,649.96

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Solution

The fourth proportional to 669,005.80, 923,158.50 and 378,649.96 is: 522,497.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,005.80 : 923,158.50 = 378,649.96 : x
  2. Step 2: Convert to fraction form
    669,005.80/923,158.50 = 378,649.96/x
  3. Step 3: Cross multiply
    669,005.80x = 923,158.50 × 378,649.96
  4. Step 4: Simplify right side
    669,005.80x = 349,553,929,098.66
  5. Step 5: Solve for x
    x = 349,553,929,098.66/669,005.80
  6. Step 6: Final answer
    x = 522,497.61

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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.