Home / 641,619.73-885,342.56-355,139.13

Finding the Fourth Proportional to 641,619.73, 885,342.56 and 355,139.13

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Solution

The fourth proportional to 641,619.73, 885,342.56 and 355,139.13 is: 490,040.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,619.73 : 885,342.56 = 355,139.13 : x
  2. Step 2: Convert to fraction form
    641,619.73/885,342.56 = 355,139.13/x
  3. Step 3: Cross multiply
    641,619.73x = 885,342.56 × 355,139.13
  4. Step 4: Simplify right side
    641,619.73x = 314,419,788,054.71
  5. Step 5: Solve for x
    x = 314,419,788,054.71/641,619.73
  6. Step 6: Final answer
    x = 490,040.71

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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.