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Finding the Fourth Proportional to 668,462.60, 1,003,583.82 and 388,181

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Solution

The fourth proportional to 668,462.60, 1,003,583.82 and 388,181 is: 582,788.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,462.60 : 1,003,583.82 = 388,181 : x
  2. Step 2: Convert to fraction form
    668,462.60/1,003,583.82 = 388,181/x
  3. Step 3: Cross multiply
    668,462.60x = 1,003,583.82 × 388,181
  4. Step 4: Simplify right side
    668,462.60x = 389,572,170,831.42
  5. Step 5: Solve for x
    x = 389,572,170,831.42/668,462.60
  6. Step 6: Final answer
    x = 582,788.28

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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.