Home / 812,986.11-1,219,255.61-339,592.95

Finding the Fourth Proportional to 812,986.11, 1,219,255.61 and 339,592.95

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Solution

The fourth proportional to 812,986.11, 1,219,255.61 and 339,592.95 is: 509,296.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,986.11 : 1,219,255.61 = 339,592.95 : x
  2. Step 2: Convert to fraction form
    812,986.11/1,219,255.61 = 339,592.95/x
  3. Step 3: Cross multiply
    812,986.11x = 1,219,255.61 × 339,592.95
  4. Step 4: Simplify right side
    812,986.11x = 414,050,607,705.99
  5. Step 5: Solve for x
    x = 414,050,607,705.99/812,986.11
  6. Step 6: Final answer
    x = 509,296.04

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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.