Home / 646,286.20-968,846.10-421,754.20

Finding the Fourth Proportional to 646,286.20, 968,846.10 and 421,754.20

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Solution

The fourth proportional to 646,286.20, 968,846.10 and 421,754.20 is: 632,250.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,286.20 : 968,846.10 = 421,754.20 : x
  2. Step 2: Convert to fraction form
    646,286.20/968,846.10 = 421,754.20/x
  3. Step 3: Cross multiply
    646,286.20x = 968,846.10 × 421,754.20
  4. Step 4: Simplify right side
    646,286.20x = 408,614,911,828.62
  5. Step 5: Solve for x
    x = 408,614,911,828.62/646,286.20
  6. Step 6: Final answer
    x = 632,250.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.