Home / 1,036,785.80-1,555,178.70-438,422.60

Finding the Fourth Proportional to 1,036,785.80, 1,555,178.70 and 438,422.60

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Solution

The fourth proportional to 1,036,785.80, 1,555,178.70 and 438,422.60 is: 657,633.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,036,785.80 : 1,555,178.70 = 438,422.60 : x
  2. Step 2: Convert to fraction form
    1,036,785.80/1,555,178.70 = 438,422.60/x
  3. Step 3: Cross multiply
    1,036,785.80x = 1,555,178.70 × 438,422.60
  4. Step 4: Simplify right side
    1,036,785.80x = 681,825,489,118.62
  5. Step 5: Solve for x
    x = 681,825,489,118.62/1,036,785.80
  6. Step 6: Final answer
    x = 657,633.90

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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.