Home / 641,945.41-885,873.82-355,459.35

Finding the Fourth Proportional to 641,945.41, 885,873.82 and 355,459.35

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Solution

The fourth proportional to 641,945.41, 885,873.82 and 355,459.35 is: 490,527.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,945.41 : 885,873.82 = 355,459.35 : x
  2. Step 2: Convert to fraction form
    641,945.41/885,873.82 = 355,459.35/x
  3. Step 3: Cross multiply
    641,945.41x = 885,873.82 × 355,459.35
  4. Step 4: Simplify right side
    641,945.41x = 314,892,128,028.54
  5. Step 5: Solve for x
    x = 314,892,128,028.54/641,945.41
  6. Step 6: Final answer
    x = 490,527.89

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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.