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Finding the Fourth Proportional to 903,393.78, 1,355,371.32 and 543,960.32

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Solution

The fourth proportional to 903,393.78, 1,355,371.32 and 543,960.32 is: 816,109.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    903,393.78 : 1,355,371.32 = 543,960.32 : x
  2. Step 2: Convert to fraction form
    903,393.78/1,355,371.32 = 543,960.32/x
  3. Step 3: Cross multiply
    903,393.78x = 1,355,371.32 × 543,960.32
  4. Step 4: Simplify right side
    903,393.78x = 737,268,216,946.02
  5. Step 5: Solve for x
    x = 737,268,216,946.02/903,393.78
  6. Step 6: Final answer
    x = 816,109.47

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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.