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Finding the Fourth Proportional to 603,903.78, 833,405.85 and 331,992.45

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Solution

The fourth proportional to 603,903.78, 833,405.85 and 331,992.45 is: 458,159.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,903.78 : 833,405.85 = 331,992.45 : x
  2. Step 2: Convert to fraction form
    603,903.78/833,405.85 = 331,992.45/x
  3. Step 3: Cross multiply
    603,903.78x = 833,405.85 × 331,992.45
  4. Step 4: Simplify right side
    603,903.78x = 276,684,449,985.83
  5. Step 5: Solve for x
    x = 276,684,449,985.83/603,903.78
  6. Step 6: Final answer
    x = 458,159.82

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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.