Home / 853,000.26-1,279,165.65-347,378.78

Finding the Fourth Proportional to 853,000.26, 1,279,165.65 and 347,378.78

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Solution

The fourth proportional to 853,000.26, 1,279,165.65 and 347,378.78 is: 520,931.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,000.26 : 1,279,165.65 = 347,378.78 : x
  2. Step 2: Convert to fraction form
    853,000.26/1,279,165.65 = 347,378.78/x
  3. Step 3: Cross multiply
    853,000.26x = 1,279,165.65 × 347,378.78
  4. Step 4: Simplify right side
    853,000.26x = 444,355,004,810.15
  5. Step 5: Solve for x
    x = 444,355,004,810.15/853,000.26
  6. Step 6: Final answer
    x = 520,931.85

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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.