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Finding the Fourth Proportional to 513,409.15, 769,441.20 and 246,638.89

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Solution

The fourth proportional to 513,409.15, 769,441.20 and 246,638.89 is: 369,635.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,409.15 : 769,441.20 = 246,638.89 : x
  2. Step 2: Convert to fraction form
    513,409.15/769,441.20 = 246,638.89/x
  3. Step 3: Cross multiply
    513,409.15x = 769,441.20 × 246,638.89
  4. Step 4: Simplify right side
    513,409.15x = 189,774,123,488.27
  5. Step 5: Solve for x
    x = 189,774,123,488.27/513,409.15
  6. Step 6: Final answer
    x = 369,635.26

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1.5x scale

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.