Home / 641,932.68-885,856.28-355,446.62

Finding the Fourth Proportional to 641,932.68, 885,856.28 and 355,446.62

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Solution

The fourth proportional to 641,932.68, 885,856.28 and 355,446.62 is: 490,510.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,932.68 : 885,856.28 = 355,446.62 : x
  2. Step 2: Convert to fraction form
    641,932.68/885,856.28 = 355,446.62/x
  3. Step 3: Cross multiply
    641,932.68x = 885,856.28 × 355,446.62
  4. Step 4: Simplify right side
    641,932.68x = 314,874,614,325.26
  5. Step 5: Solve for x
    x = 314,874,614,325.26/641,932.68
  6. Step 6: Final answer
    x = 490,510.34

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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.