Home / 782,858.88-1,080,349.38-438,695.58

Finding the Fourth Proportional to 782,858.88, 1,080,349.38 and 438,695.58

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Solution

The fourth proportional to 782,858.88, 1,080,349.38 and 438,695.58 is: 605,402.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,858.88 : 1,080,349.38 = 438,695.58 : x
  2. Step 2: Convert to fraction form
    782,858.88/1,080,349.38 = 438,695.58/x
  3. Step 3: Cross multiply
    782,858.88x = 1,080,349.38 × 438,695.58
  4. Step 4: Simplify right side
    782,858.88x = 473,944,497,861.74
  5. Step 5: Solve for x
    x = 473,944,497,861.74/782,858.88
  6. Step 6: Final answer
    x = 605,402.21

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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.