Home / 638,613.38-881,267.57-352,133.38

Finding the Fourth Proportional to 638,613.38, 881,267.57 and 352,133.38

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Solution

The fourth proportional to 638,613.38, 881,267.57 and 352,133.38 is: 485,933.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,613.38 : 881,267.57 = 352,133.38 : x
  2. Step 2: Convert to fraction form
    638,613.38/881,267.57 = 352,133.38/x
  3. Step 3: Cross multiply
    638,613.38x = 881,267.57 × 352,133.38
  4. Step 4: Simplify right side
    638,613.38x = 310,323,728,108.49
  5. Step 5: Solve for x
    x = 310,323,728,108.49/638,613.38
  6. Step 6: Final answer
    x = 485,933.65

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Double scale
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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.