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Finding the Fourth Proportional to 492,448.74, 679,633.26 and 285,762.66

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Solution

The fourth proportional to 492,448.74, 679,633.26 and 285,762.66 is: 394,383.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,448.74 : 679,633.26 = 285,762.66 : x
  2. Step 2: Convert to fraction form
    492,448.74/679,633.26 = 285,762.66/x
  3. Step 3: Cross multiply
    492,448.74x = 679,633.26 × 285,762.66
  4. Step 4: Simplify right side
    492,448.74x = 194,213,808,202.07
  5. Step 5: Solve for x
    x = 194,213,808,202.07/492,448.74
  6. Step 6: Final answer
    x = 394,383.81

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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.