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Finding the Fourth Proportional to 576,130.40, 864,195.60 and 398,837.60

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Solution

The fourth proportional to 576,130.40, 864,195.60 and 398,837.60 is: 598,256.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,130.40 : 864,195.60 = 398,837.60 : x
  2. Step 2: Convert to fraction form
    576,130.40/864,195.60 = 398,837.60/x
  3. Step 3: Cross multiply
    576,130.40x = 864,195.60 × 398,837.60
  4. Step 4: Simplify right side
    576,130.40x = 344,673,699,034.56
  5. Step 5: Solve for x
    x = 344,673,699,034.56/576,130.40
  6. Step 6: Final answer
    x = 598,256.40

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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.