Home / 819,458.26-1,229,187.48-258,536.50

Finding the Fourth Proportional to 819,458.26, 1,229,187.48 and 258,536.50

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Solution

The fourth proportional to 819,458.26, 1,229,187.48 and 258,536.50 is: 387,804.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,458.26 : 1,229,187.48 = 258,536.50 : x
  2. Step 2: Convert to fraction form
    819,458.26/1,229,187.48 = 258,536.50/x
  3. Step 3: Cross multiply
    819,458.26x = 1,229,187.48 × 258,536.50
  4. Step 4: Simplify right side
    819,458.26x = 317,789,828,923.02
  5. Step 5: Solve for x
    x = 317,789,828,923.02/819,458.26
  6. Step 6: Final answer
    x = 387,804.78

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Half scale
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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.