Home / 641,725.45-885,588.12-355,250.32

Finding the Fourth Proportional to 641,725.45, 885,588.12 and 355,250.32

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Solution

The fourth proportional to 641,725.45, 885,588.12 and 355,250.32 is: 490,249.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,725.45 : 885,588.12 = 355,250.32 : x
  2. Step 2: Convert to fraction form
    641,725.45/885,588.12 = 355,250.32/x
  3. Step 3: Cross multiply
    641,725.45x = 885,588.12 × 355,250.32
  4. Step 4: Simplify right side
    641,725.45x = 314,605,456,814.01
  5. Step 5: Solve for x
    x = 314,605,456,814.01/641,725.45
  6. Step 6: Final answer
    x = 490,249.31

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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.