Home / 643,053.57-964,579.85-193,774.44

Finding the Fourth Proportional to 643,053.57, 964,579.85 and 193,774.44

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Solution

The fourth proportional to 643,053.57, 964,579.85 and 193,774.44 is: 290,661.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,053.57 : 964,579.85 = 193,774.44 : x
  2. Step 2: Convert to fraction form
    643,053.57/964,579.85 = 193,774.44/x
  3. Step 3: Cross multiply
    643,053.57x = 964,579.85 × 193,774.44
  4. Step 4: Simplify right side
    643,053.57x = 186,910,919,300.16
  5. Step 5: Solve for x
    x = 186,910,919,300.16/643,053.57
  6. Step 6: Final answer
    x = 290,661.51

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Double scale
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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.