Home / 639,694.36-882,459.66-381,389.46

Finding the Fourth Proportional to 639,694.36, 882,459.66 and 381,389.46

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Solution

The fourth proportional to 639,694.36, 882,459.66 and 381,389.46 is: 526,127.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,694.36 : 882,459.66 = 381,389.46 : x
  2. Step 2: Convert to fraction form
    639,694.36/882,459.66 = 381,389.46/x
  3. Step 3: Cross multiply
    639,694.36x = 882,459.66 × 381,389.46
  4. Step 4: Simplify right side
    639,694.36x = 336,560,816,284.01
  5. Step 5: Solve for x
    x = 336,560,816,284.01/639,694.36
  6. Step 6: Final answer
    x = 526,127.53

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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.