Home / 861,249.32-1,188,500.10-479,289.64

Finding the Fourth Proportional to 861,249.32, 1,188,500.10 and 479,289.64

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Solution

The fourth proportional to 861,249.32, 1,188,500.10 and 479,289.64 is: 661,406.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,249.32 : 1,188,500.10 = 479,289.64 : x
  2. Step 2: Convert to fraction form
    861,249.32/1,188,500.10 = 479,289.64/x
  3. Step 3: Cross multiply
    861,249.32x = 1,188,500.10 × 479,289.64
  4. Step 4: Simplify right side
    861,249.32x = 569,635,785,068.96
  5. Step 5: Solve for x
    x = 569,635,785,068.96/861,249.32
  6. Step 6: Final answer
    x = 661,406.37

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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.