Home / 639,384.06-882,287.13-352,885.68

Finding the Fourth Proportional to 639,384.06, 882,287.13 and 352,885.68

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Solution

The fourth proportional to 639,384.06, 882,287.13 and 352,885.68 is: 486,947.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,384.06 : 882,287.13 = 352,885.68 : x
  2. Step 2: Convert to fraction form
    639,384.06/882,287.13 = 352,885.68/x
  3. Step 3: Cross multiply
    639,384.06x = 882,287.13 × 352,885.68
  4. Step 4: Simplify right side
    639,384.06x = 311,346,493,825.30
  5. Step 5: Solve for x
    x = 311,346,493,825.30/639,384.06
  6. Step 6: Final answer
    x = 486,947.54

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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.