Home / 985,401.46-1,478,154.96-311,431.48

Finding the Fourth Proportional to 985,401.46, 1,478,154.96 and 311,431.48

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Solution

The fourth proportional to 985,401.46, 1,478,154.96 and 311,431.48 is: 467,163.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,401.46 : 1,478,154.96 = 311,431.48 : x
  2. Step 2: Convert to fraction form
    985,401.46/1,478,154.96 = 311,431.48/x
  3. Step 3: Cross multiply
    985,401.46x = 1,478,154.96 × 311,431.48
  4. Step 4: Simplify right side
    985,401.46x = 460,343,986,862.14
  5. Step 5: Solve for x
    x = 460,343,986,862.14/985,401.46
  6. Step 6: Final answer
    x = 467,163.90

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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.