Home / 649,612.85-974,704.12-308,302.79

Finding the Fourth Proportional to 649,612.85, 974,704.12 and 308,302.79

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Solution

The fourth proportional to 649,612.85, 974,704.12 and 308,302.79 is: 462,589.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,612.85 : 974,704.12 = 308,302.79 : x
  2. Step 2: Convert to fraction form
    649,612.85/974,704.12 = 308,302.79/x
  3. Step 3: Cross multiply
    649,612.85x = 974,704.12 × 308,302.79
  4. Step 4: Simplify right side
    649,612.85x = 300,503,993,976.22
  5. Step 5: Solve for x
    x = 300,503,993,976.22/649,612.85
  6. Step 6: Final answer
    x = 462,589.37

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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.