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Finding the Fourth Proportional to 629,913.44, 869,247.60 and 357,944.96

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Solution

The fourth proportional to 629,913.44, 869,247.60 and 357,944.96 is: 493,945.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,913.44 : 869,247.60 = 357,944.96 : x
  2. Step 2: Convert to fraction form
    629,913.44/869,247.60 = 357,944.96/x
  3. Step 3: Cross multiply
    629,913.44x = 869,247.60 × 357,944.96
  4. Step 4: Simplify right side
    629,913.44x = 311,142,797,412.10
  5. Step 5: Solve for x
    x = 311,142,797,412.10/629,913.44
  6. Step 6: Final answer
    x = 493,945.32

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1.5x scale

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.