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Finding the Fourth Proportional to 570,391.34, 856,428.08 and 318,164.63

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Solution

The fourth proportional to 570,391.34, 856,428.08 and 318,164.63 is: 477,716.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,391.34 : 856,428.08 = 318,164.63 : x
  2. Step 2: Convert to fraction form
    570,391.34/856,428.08 = 318,164.63/x
  3. Step 3: Cross multiply
    570,391.34x = 856,428.08 × 318,164.63
  4. Step 4: Simplify right side
    570,391.34x = 272,485,117,321.85
  5. Step 5: Solve for x
    x = 272,485,117,321.85/570,391.34
  6. Step 6: Final answer
    x = 477,716.09

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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.