Home / 685,085.80-1,028,552.10-401,067.40

Finding the Fourth Proportional to 685,085.80, 1,028,552.10 and 401,067.40

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Solution

The fourth proportional to 685,085.80, 1,028,552.10 and 401,067.40 is: 602,141.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,085.80 : 1,028,552.10 = 401,067.40 : x
  2. Step 2: Convert to fraction form
    685,085.80/1,028,552.10 = 401,067.40/x
  3. Step 3: Cross multiply
    685,085.80x = 1,028,552.10 × 401,067.40
  4. Step 4: Simplify right side
    685,085.80x = 412,518,716,511.54
  5. Step 5: Solve for x
    x = 412,518,716,511.54/685,085.80
  6. Step 6: Final answer
    x = 602,141.68

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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.