Home / 686,819.44-1,030,163.55-420,442.84

Finding the Fourth Proportional to 686,819.44, 1,030,163.55 and 420,442.84

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Solution

The fourth proportional to 686,819.44, 1,030,163.55 and 420,442.84 is: 630,624.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,819.44 : 1,030,163.55 = 420,442.84 : x
  2. Step 2: Convert to fraction form
    686,819.44/1,030,163.55 = 420,442.84/x
  3. Step 3: Cross multiply
    686,819.44x = 1,030,163.55 × 420,442.84
  4. Step 4: Simplify right side
    686,819.44x = 433,124,888,626.48
  5. Step 5: Solve for x
    x = 433,124,888,626.48/686,819.44
  6. Step 6: Final answer
    x = 630,624.10

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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.