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Finding the Fourth Proportional to 638,911.37, 881,698.56 and 367,031.90

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Solution

The fourth proportional to 638,911.37, 881,698.56 and 367,031.90 is: 506,504.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,911.37 : 881,698.56 = 367,031.90 : x
  2. Step 2: Convert to fraction form
    638,911.37/881,698.56 = 367,031.90/x
  3. Step 3: Cross multiply
    638,911.37x = 881,698.56 × 367,031.90
  4. Step 4: Simplify right side
    638,911.37x = 323,611,497,704.06
  5. Step 5: Solve for x
    x = 323,611,497,704.06/638,911.37
  6. Step 6: Final answer
    x = 506,504.52

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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.