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Finding the Fourth Proportional to 570,589.79, 787,438.53 and 315,941.04

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Solution

The fourth proportional to 570,589.79, 787,438.53 and 315,941.04 is: 436,012.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,589.79 : 787,438.53 = 315,941.04 : x
  2. Step 2: Convert to fraction form
    570,589.79/787,438.53 = 315,941.04/x
  3. Step 3: Cross multiply
    570,589.79x = 787,438.53 × 315,941.04
  4. Step 4: Simplify right side
    570,589.79x = 248,784,148,104.27
  5. Step 5: Solve for x
    x = 248,784,148,104.27/570,589.79
  6. Step 6: Final answer
    x = 436,012.27

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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.