Home / 639,365.48-882,261.54-352,867.06

Finding the Fourth Proportional to 639,365.48, 882,261.54 and 352,867.06

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Solution

The fourth proportional to 639,365.48, 882,261.54 and 352,867.06 is: 486,921.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,365.48 : 882,261.54 = 352,867.06 : x
  2. Step 2: Convert to fraction form
    639,365.48/882,261.54 = 352,867.06/x
  3. Step 3: Cross multiply
    639,365.48x = 882,261.54 × 352,867.06
  4. Step 4: Simplify right side
    639,365.48x = 311,321,035,770.87
  5. Step 5: Solve for x
    x = 311,321,035,770.87/639,365.48
  6. Step 6: Final answer
    x = 486,921.87

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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.