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Finding the Fourth Proportional to 638,912.37, 881,699.94 and 367,032.90

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Solution

The fourth proportional to 638,912.37, 881,699.94 and 367,032.90 is: 506,505.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,912.37 : 881,699.94 = 367,032.90 : x
  2. Step 2: Convert to fraction form
    638,912.37/881,699.94 = 367,032.90/x
  3. Step 3: Cross multiply
    638,912.37x = 881,699.94 × 367,032.90
  4. Step 4: Simplify right side
    638,912.37x = 323,612,885,908.03
  5. Step 5: Solve for x
    x = 323,612,885,908.03/638,912.37
  6. Step 6: Final answer
    x = 506,505.90

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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.