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Finding the Fourth Proportional to 629,765.60, 869,043.65 and 357,795.72

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Solution

The fourth proportional to 629,765.60, 869,043.65 and 357,795.72 is: 493,739.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,765.60 : 869,043.65 = 357,795.72 : x
  2. Step 2: Convert to fraction form
    629,765.60/869,043.65 = 357,795.72/x
  3. Step 3: Cross multiply
    629,765.60x = 869,043.65 × 357,795.72
  4. Step 4: Simplify right side
    629,765.60x = 310,940,098,463.18
  5. Step 5: Solve for x
    x = 310,940,098,463.18/629,765.60
  6. Step 6: Final answer
    x = 493,739.41

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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.