Home / 646,411.20-969,616.80-203,121.60

Finding the Fourth Proportional to 646,411.20, 969,616.80 and 203,121.60

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Solution

The fourth proportional to 646,411.20, 969,616.80 and 203,121.60 is: 304,682.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,411.20 : 969,616.80 = 203,121.60 : x
  2. Step 2: Convert to fraction form
    646,411.20/969,616.80 = 203,121.60/x
  3. Step 3: Cross multiply
    646,411.20x = 969,616.80 × 203,121.60
  4. Step 4: Simplify right side
    646,411.20x = 196,950,115,802.88
  5. Step 5: Solve for x
    x = 196,950,115,802.88/646,411.20
  6. Step 6: Final answer
    x = 304,682.40

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Similar ratio
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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.