Home / 1,086,431.80-1,629,639.60-328,271.80

Finding the Fourth Proportional to 1,086,431.80, 1,629,639.60 and 328,271.80

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Solution

The fourth proportional to 1,086,431.80, 1,629,639.60 and 328,271.80 is: 492,405.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086,431.80 : 1,629,639.60 = 328,271.80 : x
  2. Step 2: Convert to fraction form
    1,086,431.80/1,629,639.60 = 328,271.80/x
  3. Step 3: Cross multiply
    1,086,431.80x = 1,629,639.60 × 328,271.80
  4. Step 4: Simplify right side
    1,086,431.80x = 534,964,724,843.28
  5. Step 5: Solve for x
    x = 534,964,724,843.28/1,086,431.80
  6. Step 6: Final answer
    x = 492,405.25

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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.