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Finding the Fourth Proportional to 646,228.80, 968,954.40 and 331,300.80

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Solution

The fourth proportional to 646,228.80, 968,954.40 and 331,300.80 is: 496,751.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,228.80 : 968,954.40 = 331,300.80 : x
  2. Step 2: Convert to fraction form
    646,228.80/968,954.40 = 331,300.80/x
  3. Step 3: Cross multiply
    646,228.80x = 968,954.40 × 331,300.80
  4. Step 4: Simplify right side
    646,228.80x = 321,015,367,883.52
  5. Step 5: Solve for x
    x = 321,015,367,883.52/646,228.80
  6. Step 6: Final answer
    x = 496,751.87

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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.