Home / 641,857.19-885,790.59-355,377.27

Finding the Fourth Proportional to 641,857.19, 885,790.59 and 355,377.27

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Solution

The fourth proportional to 641,857.19, 885,790.59 and 355,377.27 is: 490,435.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,857.19 : 885,790.59 = 355,377.27 : x
  2. Step 2: Convert to fraction form
    641,857.19/885,790.59 = 355,377.27/x
  3. Step 3: Cross multiply
    641,857.19x = 885,790.59 × 355,377.27
  4. Step 4: Simplify right side
    641,857.19x = 314,789,841,665.89
  5. Step 5: Solve for x
    x = 314,789,841,665.89/641,857.19
  6. Step 6: Final answer
    x = 490,435.96

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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.