Home / 641,619.08-885,442.20-355,165.88

Finding the Fourth Proportional to 641,619.08, 885,442.20 and 355,165.88

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Solution

The fourth proportional to 641,619.08, 885,442.20 and 355,165.88 is: 490,133.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,619.08 : 885,442.20 = 355,165.88 : x
  2. Step 2: Convert to fraction form
    641,619.08/885,442.20 = 355,165.88/x
  3. Step 3: Cross multiply
    641,619.08x = 885,442.20 × 355,165.88
  4. Step 4: Simplify right side
    641,619.08x = 314,478,858,152.14
  5. Step 5: Solve for x
    x = 314,478,858,152.14/641,619.08
  6. Step 6: Final answer
    x = 490,133.27

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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.