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Finding the Fourth Proportional to 520,438.37, 780,032.84 and 267,838.04

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Solution

The fourth proportional to 520,438.37, 780,032.84 and 267,838.04 is: 401,435.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,438.37 : 780,032.84 = 267,838.04 : x
  2. Step 2: Convert to fraction form
    520,438.37/780,032.84 = 267,838.04/x
  3. Step 3: Cross multiply
    520,438.37x = 780,032.84 × 267,838.04
  4. Step 4: Simplify right side
    520,438.37x = 208,922,467,612.13
  5. Step 5: Solve for x
    x = 208,922,467,612.13/520,438.37
  6. Step 6: Final answer
    x = 401,435.56

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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.