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Finding the Fourth Proportional to 576,032.40, 864,048.60 and 398,739.60

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Solution

The fourth proportional to 576,032.40, 864,048.60 and 398,739.60 is: 598,109.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,032.40 : 864,048.60 = 398,739.60 : x
  2. Step 2: Convert to fraction form
    576,032.40/864,048.60 = 398,739.60/x
  3. Step 3: Cross multiply
    576,032.40x = 864,048.60 × 398,739.60
  4. Step 4: Simplify right side
    576,032.40x = 344,530,393,144.56
  5. Step 5: Solve for x
    x = 344,530,393,144.56/576,032.40
  6. Step 6: Final answer
    x = 598,109.40

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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.