Home / 641,954.12-885,896.13-355,474.20

Finding the Fourth Proportional to 641,954.12, 885,896.13 and 355,474.20

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Solution

The fourth proportional to 641,954.12, 885,896.13 and 355,474.20 is: 490,554.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,954.12 : 885,896.13 = 355,474.20 : x
  2. Step 2: Convert to fraction form
    641,954.12/885,896.13 = 355,474.20/x
  3. Step 3: Cross multiply
    641,954.12x = 885,896.13 × 355,474.20
  4. Step 4: Simplify right side
    641,954.12x = 314,913,213,665.37
  5. Step 5: Solve for x
    x = 314,913,213,665.37/641,954.12
  6. Step 6: Final answer
    x = 490,554.08

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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.