Home / 685,570.88-1,028,255.04-401,392.64

Finding the Fourth Proportional to 685,570.88, 1,028,255.04 and 401,392.64

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Solution

The fourth proportional to 685,570.88, 1,028,255.04 and 401,392.64 is: 602,029.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,570.88 : 1,028,255.04 = 401,392.64 : x
  2. Step 2: Convert to fraction form
    685,570.88/1,028,255.04 = 401,392.64/x
  3. Step 3: Cross multiply
    685,570.88x = 1,028,255.04 × 401,392.64
  4. Step 4: Simplify right side
    685,570.88x = 412,734,005,098.91
  5. Step 5: Solve for x
    x = 412,734,005,098.91/685,570.88
  6. Step 6: Final answer
    x = 602,029.66

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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.