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Finding the Fourth Proportional to 675,046.36, 931,536.06 and 388,576.60

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Solution

The fourth proportional to 675,046.36, 931,536.06 and 388,576.60 is: 536,219.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,046.36 : 931,536.06 = 388,576.60 : x
  2. Step 2: Convert to fraction form
    675,046.36/931,536.06 = 388,576.60/x
  3. Step 3: Cross multiply
    675,046.36x = 931,536.06 × 388,576.60
  4. Step 4: Simplify right side
    675,046.36x = 361,973,114,972.20
  5. Step 5: Solve for x
    x = 361,973,114,972.20/675,046.36
  6. Step 6: Final answer
    x = 536,219.64

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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.