Home / 641,932.16-885,855.56-355,446.10

Finding the Fourth Proportional to 641,932.16, 885,855.56 and 355,446.10

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Solution

The fourth proportional to 641,932.16, 885,855.56 and 355,446.10 is: 490,509.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,932.16 : 885,855.56 = 355,446.10 : x
  2. Step 2: Convert to fraction form
    641,932.16/885,855.56 = 355,446.10/x
  3. Step 3: Cross multiply
    641,932.16x = 885,855.56 × 355,446.10
  4. Step 4: Simplify right side
    641,932.16x = 314,873,900,311.85
  5. Step 5: Solve for x
    x = 314,873,900,311.85/641,932.16
  6. Step 6: Final answer
    x = 490,509.62

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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.