Home / 1,086,128.80-1,629,387.60-455,106.40

Finding the Fourth Proportional to 1,086,128.80, 1,629,387.60 and 455,106.40

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Solution

The fourth proportional to 1,086,128.80, 1,629,387.60 and 455,106.40 is: 682,741.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086,128.80 : 1,629,387.60 = 455,106.40 : x
  2. Step 2: Convert to fraction form
    1,086,128.80/1,629,387.60 = 455,106.40/x
  3. Step 3: Cross multiply
    1,086,128.80x = 1,629,387.60 × 455,106.40
  4. Step 4: Simplify right side
    1,086,128.80x = 741,544,724,840.64
  5. Step 5: Solve for x
    x = 741,544,724,840.64/1,086,128.80
  6. Step 6: Final answer
    x = 682,741.06

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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.