Home / 641,867.96-885,805.46-355,388.05

Finding the Fourth Proportional to 641,867.96, 885,805.46 and 355,388.05

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Solution

The fourth proportional to 641,867.96, 885,805.46 and 355,388.05 is: 490,450.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,867.96 : 885,805.46 = 355,388.05 : x
  2. Step 2: Convert to fraction form
    641,867.96/885,805.46 = 355,388.05/x
  3. Step 3: Cross multiply
    641,867.96x = 885,805.46 × 355,388.05
  4. Step 4: Simplify right side
    641,867.96x = 314,804,675,108.75
  5. Step 5: Solve for x
    x = 314,804,675,108.75/641,867.96
  6. Step 6: Final answer
    x = 490,450.83

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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.