Home / 1,147,131.90-1,720,730.52-388,975.50

Finding the Fourth Proportional to 1,147,131.90, 1,720,730.52 and 388,975.50

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Solution

The fourth proportional to 1,147,131.90, 1,720,730.52 and 388,975.50 is: 583,474.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,147,131.90 : 1,720,730.52 = 388,975.50 : x
  2. Step 2: Convert to fraction form
    1,147,131.90/1,720,730.52 = 388,975.50/x
  3. Step 3: Cross multiply
    1,147,131.90x = 1,720,730.52 × 388,975.50
  4. Step 4: Simplify right side
    1,147,131.90x = 669,322,014,382.26
  5. Step 5: Solve for x
    x = 669,322,014,382.26/1,147,131.90
  6. Step 6: Final answer
    x = 583,474.33

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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.