Home / 818,210.70-1,227,509.22-257,245.20

Finding the Fourth Proportional to 818,210.70, 1,227,509.22 and 257,245.20

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Solution

The fourth proportional to 818,210.70, 1,227,509.22 and 257,245.20 is: 385,928.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,210.70 : 1,227,509.22 = 257,245.20 : x
  2. Step 2: Convert to fraction form
    818,210.70/1,227,509.22 = 257,245.20/x
  3. Step 3: Cross multiply
    818,210.70x = 1,227,509.22 × 257,245.20
  4. Step 4: Simplify right side
    818,210.70x = 315,770,854,800.74
  5. Step 5: Solve for x
    x = 315,770,854,800.74/818,210.70
  6. Step 6: Final answer
    x = 385,928.53

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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.