Home / 790,900.74-1,091,444.42-428,323.55

Finding the Fourth Proportional to 790,900.74, 1,091,444.42 and 428,323.55

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Solution

The fourth proportional to 790,900.74, 1,091,444.42 and 428,323.55 is: 591,087.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,900.74 : 1,091,444.42 = 428,323.55 : x
  2. Step 2: Convert to fraction form
    790,900.74/1,091,444.42 = 428,323.55/x
  3. Step 3: Cross multiply
    790,900.74x = 1,091,444.42 × 428,323.55
  4. Step 4: Simplify right side
    790,900.74x = 467,491,344,215.68
  5. Step 5: Solve for x
    x = 467,491,344,215.68/790,900.74
  6. Step 6: Final answer
    x = 591,087.25

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.