Home / 728,163.58-1,091,387.28-328,336.24

Finding the Fourth Proportional to 728,163.58, 1,091,387.28 and 328,336.24

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Solution

The fourth proportional to 728,163.58, 1,091,387.28 and 328,336.24 is: 492,117.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,163.58 : 1,091,387.28 = 328,336.24 : x
  2. Step 2: Convert to fraction form
    728,163.58/1,091,387.28 = 328,336.24/x
  3. Step 3: Cross multiply
    728,163.58x = 1,091,387.28 × 328,336.24
  4. Step 4: Simplify right side
    728,163.58x = 358,341,995,899.03
  5. Step 5: Solve for x
    x = 358,341,995,899.03/728,163.58
  6. Step 6: Final answer
    x = 492,117.44

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Double scale
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Similar ratio
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1.5x scale

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.