Home / 728,109.66-1,091,306.64-328,282.32

Finding the Fourth Proportional to 728,109.66, 1,091,306.64 and 328,282.32

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Solution

The fourth proportional to 728,109.66, 1,091,306.64 and 328,282.32 is: 492,036.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,109.66 : 1,091,306.64 = 328,282.32 : x
  2. Step 2: Convert to fraction form
    728,109.66/1,091,306.64 = 328,282.32/x
  3. Step 3: Cross multiply
    728,109.66x = 1,091,306.64 × 328,282.32
  4. Step 4: Simplify right side
    728,109.66x = 358,256,675,610.61
  5. Step 5: Solve for x
    x = 358,256,675,610.61/728,109.66
  6. Step 6: Final answer
    x = 492,036.70

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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.