Home / 641,933.66-885,857.63-355,447.59

Finding the Fourth Proportional to 641,933.66, 885,857.63 and 355,447.59

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Solution

The fourth proportional to 641,933.66, 885,857.63 and 355,447.59 is: 490,511.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,933.66 : 885,857.63 = 355,447.59 : x
  2. Step 2: Convert to fraction form
    641,933.66/885,857.63 = 355,447.59/x
  3. Step 3: Cross multiply
    641,933.66x = 885,857.63 × 355,447.59
  4. Step 4: Simplify right side
    641,933.66x = 314,875,957,889.37
  5. Step 5: Solve for x
    x = 314,875,957,889.37/641,933.66
  6. Step 6: Final answer
    x = 490,511.68

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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.