Home / 1,267,874.80-1,901,812.20-426,338.80

Finding the Fourth Proportional to 1,267,874.80, 1,901,812.20 and 426,338.80

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Solution

The fourth proportional to 1,267,874.80, 1,901,812.20 and 426,338.80 is: 639,508.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,267,874.80 : 1,901,812.20 = 426,338.80 : x
  2. Step 2: Convert to fraction form
    1,267,874.80/1,901,812.20 = 426,338.80/x
  3. Step 3: Cross multiply
    1,267,874.80x = 1,901,812.20 × 426,338.80
  4. Step 4: Simplify right side
    1,267,874.80x = 810,816,331,173.36
  5. Step 5: Solve for x
    x = 810,816,331,173.36/1,267,874.80
  6. Step 6: Final answer
    x = 639,508.20

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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.