Home / 638,996.29-881,814.83-352,516.38

Finding the Fourth Proportional to 638,996.29, 881,814.83 and 352,516.38

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Solution

The fourth proportional to 638,996.29, 881,814.83 and 352,516.38 is: 486,472.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,996.29 : 881,814.83 = 352,516.38 : x
  2. Step 2: Convert to fraction form
    638,996.29/881,814.83 = 352,516.38/x
  3. Step 3: Cross multiply
    638,996.29x = 881,814.83 × 352,516.38
  4. Step 4: Simplify right side
    638,996.29x = 310,854,171,219.45
  5. Step 5: Solve for x
    x = 310,854,171,219.45/638,996.29
  6. Step 6: Final answer
    x = 486,472.57

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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.