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Finding the Fourth Proportional to 640,982.70, 884,529.45 and 350,589.60

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Solution

The fourth proportional to 640,982.70, 884,529.45 and 350,589.60 is: 483,799.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,982.70 : 884,529.45 = 350,589.60 : x
  2. Step 2: Convert to fraction form
    640,982.70/884,529.45 = 350,589.60/x
  3. Step 3: Cross multiply
    640,982.70x = 884,529.45 × 350,589.60
  4. Step 4: Simplify right side
    640,982.70x = 310,106,826,063.72
  5. Step 5: Solve for x
    x = 310,106,826,063.72/640,982.70
  6. Step 6: Final answer
    x = 483,799.06

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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.