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Finding the Fourth Proportional to 496,987.65, 685,824.11 and 303,718.58

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Solution

The fourth proportional to 496,987.65, 685,824.11 and 303,718.58 is: 419,120.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,987.65 : 685,824.11 = 303,718.58 : x
  2. Step 2: Convert to fraction form
    496,987.65/685,824.11 = 303,718.58/x
  3. Step 3: Cross multiply
    496,987.65x = 685,824.11 × 303,718.58
  4. Step 4: Simplify right side
    496,987.65x = 208,297,525,290.45
  5. Step 5: Solve for x
    x = 208,297,525,290.45/496,987.65
  6. Step 6: Final answer
    x = 419,120.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.