Home / 790,710.44-1,091,182.52-428,138.76

Finding the Fourth Proportional to 790,710.44, 1,091,182.52 and 428,138.76

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Solution

The fourth proportional to 790,710.44, 1,091,182.52 and 428,138.76 is: 590,832.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,710.44 : 1,091,182.52 = 428,138.76 : x
  2. Step 2: Convert to fraction form
    790,710.44/1,091,182.52 = 428,138.76/x
  3. Step 3: Cross multiply
    790,710.44x = 1,091,182.52 × 428,138.76
  4. Step 4: Simplify right side
    790,710.44x = 467,177,531,046.48
  5. Step 5: Solve for x
    x = 467,177,531,046.48/790,710.44
  6. Step 6: Final answer
    x = 590,832.63

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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.