Home / 643,918.71-965,878.08-223,194.60

Finding the Fourth Proportional to 643,918.71, 965,878.08 and 223,194.60

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Solution

The fourth proportional to 643,918.71, 965,878.08 and 223,194.60 is: 334,791.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,918.71 : 965,878.08 = 223,194.60 : x
  2. Step 2: Convert to fraction form
    643,918.71/965,878.08 = 223,194.60/x
  3. Step 3: Cross multiply
    643,918.71x = 965,878.08 × 223,194.60
  4. Step 4: Simplify right side
    643,918.71x = 215,578,771,714.37
  5. Step 5: Solve for x
    x = 215,578,771,714.37/643,918.71
  6. Step 6: Final answer
    x = 334,791.91

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Double scale
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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.