Home / 639,543.45-882,546.81-353,057.40

Finding the Fourth Proportional to 639,543.45, 882,546.81 and 353,057.40

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Solution

The fourth proportional to 639,543.45, 882,546.81 and 353,057.40 is: 487,206.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,543.45 : 882,546.81 = 353,057.40 : x
  2. Step 2: Convert to fraction form
    639,543.45/882,546.81 = 353,057.40/x
  3. Step 3: Cross multiply
    639,543.45x = 882,546.81 × 353,057.40
  4. Step 4: Simplify right side
    639,543.45x = 311,589,682,116.89
  5. Step 5: Solve for x
    x = 311,589,682,116.89/639,543.45
  6. Step 6: Final answer
    x = 487,206.43

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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.