Home / 492,668.87-679,899.83-285,921.36

Finding the Fourth Proportional to 492,668.87, 679,899.83 and 285,921.36

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Solution

The fourth proportional to 492,668.87, 679,899.83 and 285,921.36 is: 394,581.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,668.87 : 679,899.83 = 285,921.36 : x
  2. Step 2: Convert to fraction form
    492,668.87/679,899.83 = 285,921.36/x
  3. Step 3: Cross multiply
    492,668.87x = 679,899.83 × 285,921.36
  4. Step 4: Simplify right side
    492,668.87x = 194,397,882,627.76
  5. Step 5: Solve for x
    x = 194,397,882,627.76/492,668.87
  6. Step 6: Final answer
    x = 394,581.22

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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.