Home / 685,083.80-1,028,549.10-401,065.40

Finding the Fourth Proportional to 685,083.80, 1,028,549.10 and 401,065.40

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Solution

The fourth proportional to 685,083.80, 1,028,549.10 and 401,065.40 is: 602,138.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,083.80 : 1,028,549.10 = 401,065.40 : x
  2. Step 2: Convert to fraction form
    685,083.80/1,028,549.10 = 401,065.40/x
  3. Step 3: Cross multiply
    685,083.80x = 1,028,549.10 × 401,065.40
  4. Step 4: Simplify right side
    685,083.80x = 412,515,456,211.14
  5. Step 5: Solve for x
    x = 412,515,456,211.14/685,083.80
  6. Step 6: Final answer
    x = 602,138.68

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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.