Home / 641,935.66-885,860.39-355,449.59

Finding the Fourth Proportional to 641,935.66, 885,860.39 and 355,449.59

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Solution

The fourth proportional to 641,935.66, 885,860.39 and 355,449.59 is: 490,514.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,935.66 : 885,860.39 = 355,449.59 : x
  2. Step 2: Convert to fraction form
    641,935.66/885,860.39 = 355,449.59/x
  3. Step 3: Cross multiply
    641,935.66x = 885,860.39 × 355,449.59
  4. Step 4: Simplify right side
    641,935.66x = 314,878,710,645.49
  5. Step 5: Solve for x
    x = 314,878,710,645.49/641,935.66
  6. Step 6: Final answer
    x = 490,514.44

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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.