Home / 985,605.87-1,477,855.23-311,856.78

Finding the Fourth Proportional to 985,605.87, 1,477,855.23 and 311,856.78

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Solution

The fourth proportional to 985,605.87, 1,477,855.23 and 311,856.78 is: 467,610.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,605.87 : 1,477,855.23 = 311,856.78 : x
  2. Step 2: Convert to fraction form
    985,605.87/1,477,855.23 = 311,856.78/x
  3. Step 3: Cross multiply
    985,605.87x = 1,477,855.23 × 311,856.78
  4. Step 4: Simplify right side
    985,605.87x = 460,879,177,706.45
  5. Step 5: Solve for x
    x = 460,879,177,706.45/985,605.87
  6. Step 6: Final answer
    x = 467,610.02

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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.