Home / 728,158.58-1,091,379.78-328,331.24

Finding the Fourth Proportional to 728,158.58, 1,091,379.78 and 328,331.24

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Solution

The fourth proportional to 728,158.58, 1,091,379.78 and 328,331.24 is: 492,109.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,158.58 : 1,091,379.78 = 328,331.24 : x
  2. Step 2: Convert to fraction form
    728,158.58/1,091,379.78 = 328,331.24/x
  3. Step 3: Cross multiply
    728,158.58x = 1,091,379.78 × 328,331.24
  4. Step 4: Simplify right side
    728,158.58x = 358,334,076,478.33
  5. Step 5: Solve for x
    x = 358,334,076,478.33/728,158.58
  6. Step 6: Final answer
    x = 492,109.94

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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.