Home / 643,501.86-965,252.70-222,777.60

Finding the Fourth Proportional to 643,501.86, 965,252.70 and 222,777.60

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Solution

The fourth proportional to 643,501.86, 965,252.70 and 222,777.60 is: 334,166.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,501.86 : 965,252.70 = 222,777.60 : x
  2. Step 2: Convert to fraction form
    643,501.86/965,252.70 = 222,777.60/x
  3. Step 3: Cross multiply
    643,501.86x = 965,252.70 × 222,777.60
  4. Step 4: Simplify right side
    643,501.86x = 215,036,679,899.52
  5. Step 5: Solve for x
    x = 215,036,679,899.52/643,501.86
  6. Step 6: Final answer
    x = 334,166.37

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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.