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Finding the Fourth Proportional to 576,137.40, 864,206.10 and 398,844.60

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Solution

The fourth proportional to 576,137.40, 864,206.10 and 398,844.60 is: 598,266.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,137.40 : 864,206.10 = 398,844.60 : x
  2. Step 2: Convert to fraction form
    576,137.40/864,206.10 = 398,844.60/x
  3. Step 3: Cross multiply
    576,137.40x = 864,206.10 × 398,844.60
  4. Step 4: Simplify right side
    576,137.40x = 344,683,936,272.06
  5. Step 5: Solve for x
    x = 344,683,936,272.06/576,137.40
  6. Step 6: Final answer
    x = 598,266.90

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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.