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Finding the Fourth Proportional to 571,505.80, 856,169.94 and 355,021.96

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Solution

The fourth proportional to 571,505.80, 856,169.94 and 355,021.96 is: 531,856.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,505.80 : 856,169.94 = 355,021.96 : x
  2. Step 2: Convert to fraction form
    571,505.80/856,169.94 = 355,021.96/x
  3. Step 3: Cross multiply
    571,505.80x = 856,169.94 × 355,021.96
  4. Step 4: Simplify right side
    571,505.80x = 303,959,130,191.88
  5. Step 5: Solve for x
    x = 303,959,130,191.88/571,505.80
  6. Step 6: Final answer
    x = 531,856.60

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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.