Home / 496,870.03-685,680.78-279,079.05

Finding the Fourth Proportional to 496,870.03, 685,680.78 and 279,079.05

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Solution

The fourth proportional to 496,870.03, 685,680.78 and 279,079.05 is: 385,129.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,870.03 : 685,680.78 = 279,079.05 : x
  2. Step 2: Convert to fraction form
    496,870.03/685,680.78 = 279,079.05/x
  3. Step 3: Cross multiply
    496,870.03x = 685,680.78 × 279,079.05
  4. Step 4: Simplify right side
    496,870.03x = 191,359,137,257.26
  5. Step 5: Solve for x
    x = 191,359,137,257.26/496,870.03
  6. Step 6: Final answer
    x = 385,129.16

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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.