Home / 720,022.40-1,080,033.60-388,246.40

Finding the Fourth Proportional to 720,022.40, 1,080,033.60 and 388,246.40

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Solution

The fourth proportional to 720,022.40, 1,080,033.60 and 388,246.40 is: 582,369.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,022.40 : 1,080,033.60 = 388,246.40 : x
  2. Step 2: Convert to fraction form
    720,022.40/1,080,033.60 = 388,246.40/x
  3. Step 3: Cross multiply
    720,022.40x = 1,080,033.60 × 388,246.40
  4. Step 4: Simplify right side
    720,022.40x = 419,319,157,079.04
  5. Step 5: Solve for x
    x = 419,319,157,079.04/720,022.40
  6. Step 6: Final answer
    x = 582,369.60

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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.