Home / 686,064.95-1,028,433.22-306,771.11

Finding the Fourth Proportional to 686,064.95, 1,028,433.22 and 306,771.11

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Solution

The fourth proportional to 686,064.95, 1,028,433.22 and 306,771.11 is: 459,859.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,064.95 : 1,028,433.22 = 306,771.11 : x
  2. Step 2: Convert to fraction form
    686,064.95/1,028,433.22 = 306,771.11/x
  3. Step 3: Cross multiply
    686,064.95x = 1,028,433.22 × 306,771.11
  4. Step 4: Simplify right side
    686,064.95x = 315,493,600,460.27
  5. Step 5: Solve for x
    x = 315,493,600,460.27/686,064.95
  6. Step 6: Final answer
    x = 459,859.67

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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.