Home / 561,943.20-842,914.80-393,653.55

Finding the Fourth Proportional to 561,943.20, 842,914.80 and 393,653.55

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Solution

The fourth proportional to 561,943.20, 842,914.80 and 393,653.55 is: 590,480.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,943.20 : 842,914.80 = 393,653.55 : x
  2. Step 2: Convert to fraction form
    561,943.20/842,914.80 = 393,653.55/x
  3. Step 3: Cross multiply
    561,943.20x = 842,914.80 × 393,653.55
  4. Step 4: Simplify right side
    561,943.20x = 331,816,403,367.54
  5. Step 5: Solve for x
    x = 331,816,403,367.54/561,943.20
  6. Step 6: Final answer
    x = 590,480.33

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Half scale
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Double scale
Find fourth proportional to 561,944.20, 842,916.30 and 393,654.55
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.