Home / 853,709.10-1,279,688.85-498,540.30

Finding the Fourth Proportional to 853,709.10, 1,279,688.85 and 498,540.30

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Solution

The fourth proportional to 853,709.10, 1,279,688.85 and 498,540.30 is: 747,299.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,709.10 : 1,279,688.85 = 498,540.30 : x
  2. Step 2: Convert to fraction form
    853,709.10/1,279,688.85 = 498,540.30/x
  3. Step 3: Cross multiply
    853,709.10x = 1,279,688.85 × 498,540.30
  4. Step 4: Simplify right side
    853,709.10x = 637,976,463,185.66
  5. Step 5: Solve for x
    x = 637,976,463,185.66/853,709.10
  6. Step 6: Final answer
    x = 747,299.59

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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.