Home / 656,039.55-905,025.05-383,938.89

Finding the Fourth Proportional to 656,039.55, 905,025.05 and 383,938.89

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Solution

The fourth proportional to 656,039.55, 905,025.05 and 383,938.89 is: 529,654.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,039.55 : 905,025.05 = 383,938.89 : x
  2. Step 2: Convert to fraction form
    656,039.55/905,025.05 = 383,938.89/x
  3. Step 3: Cross multiply
    656,039.55x = 905,025.05 × 383,938.89
  4. Step 4: Simplify right side
    656,039.55x = 347,474,309,245.43
  5. Step 5: Solve for x
    x = 347,474,309,245.43/656,039.55
  6. Step 6: Final answer
    x = 529,654.51

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Double scale
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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.