Home / 861,351.70-1,188,665.36-479,468.69

Finding the Fourth Proportional to 861,351.70, 1,188,665.36 and 479,468.69

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Solution

The fourth proportional to 861,351.70, 1,188,665.36 and 479,468.69 is: 661,666.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,351.70 : 1,188,665.36 = 479,468.69 : x
  2. Step 2: Convert to fraction form
    861,351.70/1,188,665.36 = 479,468.69/x
  3. Step 3: Cross multiply
    861,351.70x = 1,188,665.36 × 479,468.69
  4. Step 4: Simplify right side
    861,351.70x = 569,927,823,007.58
  5. Step 5: Solve for x
    x = 569,927,823,007.58/861,351.70
  6. Step 6: Final answer
    x = 661,666.80

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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.