Home / 684,559.40-1,025,456.70-388,725.80

Finding the Fourth Proportional to 684,559.40, 1,025,456.70 and 388,725.80

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Solution

The fourth proportional to 684,559.40, 1,025,456.70 and 388,725.80 is: 582,303.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,559.40 : 1,025,456.70 = 388,725.80 : x
  2. Step 2: Convert to fraction form
    684,559.40/1,025,456.70 = 388,725.80/x
  3. Step 3: Cross multiply
    684,559.40x = 1,025,456.70 × 388,725.80
  4. Step 4: Simplify right side
    684,559.40x = 398,621,476,072.86
  5. Step 5: Solve for x
    x = 398,621,476,072.86/684,559.40
  6. Step 6: Final answer
    x = 582,303.71

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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.