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Finding the Fourth Proportional to 649,716.80, 974,642.05 and 245,249.70

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Solution

The fourth proportional to 649,716.80, 974,642.05 and 245,249.70 is: 367,899.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,716.80 : 974,642.05 = 245,249.70 : x
  2. Step 2: Convert to fraction form
    649,716.80/974,642.05 = 245,249.70/x
  3. Step 3: Cross multiply
    649,716.80x = 974,642.05 × 245,249.70
  4. Step 4: Simplify right side
    649,716.80x = 239,030,670,369.89
  5. Step 5: Solve for x
    x = 239,030,670,369.89/649,716.80
  6. Step 6: Final answer
    x = 367,899.78

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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.