Home / 1,091,067.20-1,636,600.80-343,342.40

Finding the Fourth Proportional to 1,091,067.20, 1,636,600.80 and 343,342.40

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Solution

The fourth proportional to 1,091,067.20, 1,636,600.80 and 343,342.40 is: 515,013.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,091,067.20 : 1,636,600.80 = 343,342.40 : x
  2. Step 2: Convert to fraction form
    1,091,067.20/1,636,600.80 = 343,342.40/x
  3. Step 3: Cross multiply
    1,091,067.20x = 1,636,600.80 × 343,342.40
  4. Step 4: Simplify right side
    1,091,067.20x = 561,914,446,513.92
  5. Step 5: Solve for x
    x = 561,914,446,513.92/1,091,067.20
  6. Step 6: Final answer
    x = 515,013.60

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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.