Home / 1,268,218.80-1,902,328.20-426,682.80

Finding the Fourth Proportional to 1,268,218.80, 1,902,328.20 and 426,682.80

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Solution

The fourth proportional to 1,268,218.80, 1,902,328.20 and 426,682.80 is: 640,024.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,268,218.80 : 1,902,328.20 = 426,682.80 : x
  2. Step 2: Convert to fraction form
    1,268,218.80/1,902,328.20 = 426,682.80/x
  3. Step 3: Cross multiply
    1,268,218.80x = 1,902,328.20 × 426,682.80
  4. Step 4: Simplify right side
    1,268,218.80x = 811,690,722,894.96
  5. Step 5: Solve for x
    x = 811,690,722,894.96/1,268,218.80
  6. Step 6: Final answer
    x = 640,024.20

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Double scale
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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.