Home / 685,472.58-1,028,386.26-401,403.15

Finding the Fourth Proportional to 685,472.58, 1,028,386.26 and 401,403.15

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Solution

The fourth proportional to 685,472.58, 1,028,386.26 and 401,403.15 is: 602,208.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,472.58 : 1,028,386.26 = 401,403.15 : x
  2. Step 2: Convert to fraction form
    685,472.58/1,028,386.26 = 401,403.15/x
  3. Step 3: Cross multiply
    685,472.58x = 1,028,386.26 × 401,403.15
  4. Step 4: Simplify right side
    685,472.58x = 412,797,484,180.72
  5. Step 5: Solve for x
    x = 412,797,484,180.72/685,472.58
  6. Step 6: Final answer
    x = 602,208.60

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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.