Home / 1,098,020.40-1,647,030.60-388,071.60

Finding the Fourth Proportional to 1,098,020.40, 1,647,030.60 and 388,071.60

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Solution

The fourth proportional to 1,098,020.40, 1,647,030.60 and 388,071.60 is: 582,107.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,098,020.40 : 1,647,030.60 = 388,071.60 : x
  2. Step 2: Convert to fraction form
    1,098,020.40/1,647,030.60 = 388,071.60/x
  3. Step 3: Cross multiply
    1,098,020.40x = 1,647,030.60 × 388,071.60
  4. Step 4: Simplify right side
    1,098,020.40x = 639,165,800,190.96
  5. Step 5: Solve for x
    x = 639,165,800,190.96/1,098,020.40
  6. Step 6: Final answer
    x = 582,107.40

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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.