Home / 854,053.40-1,280,644.32-285,229.55

Finding the Fourth Proportional to 854,053.40, 1,280,644.32 and 285,229.55

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Solution

The fourth proportional to 854,053.40, 1,280,644.32 and 285,229.55 is: 427,698.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    854,053.40 : 1,280,644.32 = 285,229.55 : x
  2. Step 2: Convert to fraction form
    854,053.40/1,280,644.32 = 285,229.55/x
  3. Step 3: Cross multiply
    854,053.40x = 1,280,644.32 × 285,229.55
  4. Step 4: Simplify right side
    854,053.40x = 365,277,607,374.88
  5. Step 5: Solve for x
    x = 365,277,607,374.88/854,053.40
  6. Step 6: Final answer
    x = 427,698.79

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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.