Home / 722,128.26-1,083,394.88-290,149.05

Finding the Fourth Proportional to 722,128.26, 1,083,394.88 and 290,149.05

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Solution

The fourth proportional to 722,128.26, 1,083,394.88 and 290,149.05 is: 435,304.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,128.26 : 1,083,394.88 = 290,149.05 : x
  2. Step 2: Convert to fraction form
    722,128.26/1,083,394.88 = 290,149.05/x
  3. Step 3: Cross multiply
    722,128.26x = 1,083,394.88 × 290,149.05
  4. Step 4: Simplify right side
    722,128.26x = 314,345,993,756.12
  5. Step 5: Solve for x
    x = 314,345,993,756.12/722,128.26
  6. Step 6: Final answer
    x = 435,304.93

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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.