Home / 641,665.26-885,487.34-355,179.20

Finding the Fourth Proportional to 641,665.26, 885,487.34 and 355,179.20

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Solution

The fourth proportional to 641,665.26, 885,487.34 and 355,179.20 is: 490,141.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,665.26 : 885,487.34 = 355,179.20 : x
  2. Step 2: Convert to fraction form
    641,665.26/885,487.34 = 355,179.20/x
  3. Step 3: Cross multiply
    641,665.26x = 885,487.34 × 355,179.20
  4. Step 4: Simplify right side
    641,665.26x = 314,506,681,491.84
  5. Step 5: Solve for x
    x = 314,506,681,491.84/641,665.26
  6. Step 6: Final answer
    x = 490,141.36

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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.