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Finding the Fourth Proportional to 570,391.75, 856,428.71 and 318,165.04

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Solution

The fourth proportional to 570,391.75, 856,428.71 and 318,165.04 is: 477,716.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,391.75 : 856,428.71 = 318,165.04 : x
  2. Step 2: Convert to fraction form
    570,391.75/856,428.71 = 318,165.04/x
  3. Step 3: Cross multiply
    570,391.75x = 856,428.71 × 318,165.04
  4. Step 4: Simplify right side
    570,391.75x = 272,485,674,774.30
  5. Step 5: Solve for x
    x = 272,485,674,774.30/570,391.75
  6. Step 6: Final answer
    x = 477,716.72

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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.