Home / 672,468.64-1,006,921.20-405,872.80

Finding the Fourth Proportional to 672,468.64, 1,006,921.20 and 405,872.80

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Solution

The fourth proportional to 672,468.64, 1,006,921.20 and 405,872.80 is: 607,733.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,468.64 : 1,006,921.20 = 405,872.80 : x
  2. Step 2: Convert to fraction form
    672,468.64/1,006,921.20 = 405,872.80/x
  3. Step 3: Cross multiply
    672,468.64x = 1,006,921.20 × 405,872.80
  4. Step 4: Simplify right side
    672,468.64x = 408,681,926,823.36
  5. Step 5: Solve for x
    x = 408,681,926,823.36/672,468.64
  6. Step 6: Final answer
    x = 607,733.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.