Home / 1,019,620.72-1,528,536.84-388,114.48

Finding the Fourth Proportional to 1,019,620.72, 1,528,536.84 and 388,114.48

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Solution

The fourth proportional to 1,019,620.72, 1,528,536.84 and 388,114.48 is: 581,831.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,019,620.72 : 1,528,536.84 = 388,114.48 : x
  2. Step 2: Convert to fraction form
    1,019,620.72/1,528,536.84 = 388,114.48/x
  3. Step 3: Cross multiply
    1,019,620.72x = 1,528,536.84 × 388,114.48
  4. Step 4: Simplify right side
    1,019,620.72x = 593,247,280,817.44
  5. Step 5: Solve for x
    x = 593,247,280,817.44/1,019,620.72
  6. Step 6: Final answer
    x = 581,831.33

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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.