Home / 818,826.91-1,228,355.21-286,226.80

Finding the Fourth Proportional to 818,826.91, 1,228,355.21 and 286,226.80

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Solution

The fourth proportional to 818,826.91, 1,228,355.21 and 286,226.80 is: 429,380.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,826.91 : 1,228,355.21 = 286,226.80 : x
  2. Step 2: Convert to fraction form
    818,826.91/1,228,355.21 = 286,226.80/x
  3. Step 3: Cross multiply
    818,826.91x = 1,228,355.21 × 286,226.80
  4. Step 4: Simplify right side
    818,826.91x = 351,588,181,021.63
  5. Step 5: Solve for x
    x = 351,588,181,021.63/818,826.91
  6. Step 6: Final answer
    x = 429,380.34

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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.