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Finding the Fourth Proportional to 544,578.40, 816,176.40 and 485,135.20

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Solution

The fourth proportional to 544,578.40, 816,176.40 and 485,135.20 is: 727,087.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    544,578.40 : 816,176.40 = 485,135.20 : x
  2. Step 2: Convert to fraction form
    544,578.40/816,176.40 = 485,135.20/x
  3. Step 3: Cross multiply
    544,578.40x = 816,176.40 × 485,135.20
  4. Step 4: Simplify right side
    544,578.40x = 395,955,901,049.28
  5. Step 5: Solve for x
    x = 395,955,901,049.28/544,578.40
  6. Step 6: Final answer
    x = 727,087.05

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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.