Home / 641,867.58-885,804.92-355,387.65

Finding the Fourth Proportional to 641,867.58, 885,804.92 and 355,387.65

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Solution

The fourth proportional to 641,867.58, 885,804.92 and 355,387.65 is: 490,450.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,867.58 : 885,804.92 = 355,387.65 : x
  2. Step 2: Convert to fraction form
    641,867.58/885,804.92 = 355,387.65/x
  3. Step 3: Cross multiply
    641,867.58x = 885,804.92 × 355,387.65
  4. Step 4: Simplify right side
    641,867.58x = 314,804,127,100.30
  5. Step 5: Solve for x
    x = 314,804,127,100.30/641,867.58
  6. Step 6: Final answer
    x = 490,450.27

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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.