Home / 643,250.91-887,105.38-401,555.91

Finding the Fourth Proportional to 643,250.91, 887,105.38 and 401,555.91

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Solution

The fourth proportional to 643,250.91, 887,105.38 and 401,555.91 is: 553,784.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,250.91 : 887,105.38 = 401,555.91 : x
  2. Step 2: Convert to fraction form
    643,250.91/887,105.38 = 401,555.91/x
  3. Step 3: Cross multiply
    643,250.91x = 887,105.38 × 401,555.91
  4. Step 4: Simplify right side
    643,250.91x = 356,222,408,131.80
  5. Step 5: Solve for x
    x = 356,222,408,131.80/643,250.91
  6. Step 6: Final answer
    x = 553,784.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.