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Finding the Fourth Proportional to 501,990.53, 692,746.94 and 275,636.03

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Solution

The fourth proportional to 501,990.53, 692,746.94 and 275,636.03 is: 380,377.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,990.53 : 692,746.94 = 275,636.03 : x
  2. Step 2: Convert to fraction form
    501,990.53/692,746.94 = 275,636.03/x
  3. Step 3: Cross multiply
    501,990.53x = 692,746.94 × 275,636.03
  4. Step 4: Simplify right side
    501,990.53x = 190,946,016,336.25
  5. Step 5: Solve for x
    x = 190,946,016,336.25/501,990.53
  6. Step 6: Final answer
    x = 380,377.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.