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Finding the Fourth Proportional to 483,466.80, 724,325.40 and 394,237.20

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Solution

The fourth proportional to 483,466.80, 724,325.40 and 394,237.20 is: 590,642.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,466.80 : 724,325.40 = 394,237.20 : x
  2. Step 2: Convert to fraction form
    483,466.80/724,325.40 = 394,237.20/x
  3. Step 3: Cross multiply
    483,466.80x = 724,325.40 × 394,237.20
  4. Step 4: Simplify right side
    483,466.80x = 285,556,017,584.88
  5. Step 5: Solve for x
    x = 285,556,017,584.88/483,466.80
  6. Step 6: Final answer
    x = 590,642.45

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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.