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Finding the Fourth Proportional to 456,941, 629,451.87 and 388,739.54

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Solution

The fourth proportional to 456,941, 629,451.87 and 388,739.54 is: 535,502.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,941 : 629,451.87 = 388,739.54 : x
  2. Step 2: Convert to fraction form
    456,941/629,451.87 = 388,739.54/x
  3. Step 3: Cross multiply
    456,941x = 629,451.87 × 388,739.54
  4. Step 4: Simplify right side
    456,941x = 244,692,830,395.94
  5. Step 5: Solve for x
    x = 244,692,830,395.94/456,941
  6. Step 6: Final answer
    x = 535,502.02

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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.