Home / 689,011.38-950,770.62-398,576.34

Finding the Fourth Proportional to 689,011.38, 950,770.62 and 398,576.34

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Solution

The fourth proportional to 689,011.38, 950,770.62 and 398,576.34 is: 549,997.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,011.38 : 950,770.62 = 398,576.34 : x
  2. Step 2: Convert to fraction form
    689,011.38/950,770.62 = 398,576.34/x
  3. Step 3: Cross multiply
    689,011.38x = 950,770.62 × 398,576.34
  4. Step 4: Simplify right side
    689,011.38x = 378,954,673,899.13
  5. Step 5: Solve for x
    x = 378,954,673,899.13/689,011.38
  6. Step 6: Final answer
    x = 549,997.70

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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.