Home / 639,381.80-882,284.03-352,883.42

Finding the Fourth Proportional to 639,381.80, 882,284.03 and 352,883.42

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Solution

The fourth proportional to 639,381.80, 882,284.03 and 352,883.42 is: 486,944.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,381.80 : 882,284.03 = 352,883.42 : x
  2. Step 2: Convert to fraction form
    639,381.80/882,284.03 = 352,883.42/x
  3. Step 3: Cross multiply
    639,381.80x = 882,284.03 × 352,883.42
  4. Step 4: Simplify right side
    639,381.80x = 311,343,404,373.82
  5. Step 5: Solve for x
    x = 311,343,404,373.82/639,381.80
  6. Step 6: Final answer
    x = 486,944.43

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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.