Home / 643,561.20-965,341.80-494,553.60

Finding the Fourth Proportional to 643,561.20, 965,341.80 and 494,553.60

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Solution

The fourth proportional to 643,561.20, 965,341.80 and 494,553.60 is: 741,830.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,561.20 : 965,341.80 = 494,553.60 : x
  2. Step 2: Convert to fraction form
    643,561.20/965,341.80 = 494,553.60/x
  3. Step 3: Cross multiply
    643,561.20x = 965,341.80 × 494,553.60
  4. Step 4: Simplify right side
    643,561.20x = 477,413,262,420.48
  5. Step 5: Solve for x
    x = 477,413,262,420.48/643,561.20
  6. Step 6: Final answer
    x = 741,830.40

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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.