Home / 853,674.35-1,280,650.46-398,720.52

Finding the Fourth Proportional to 853,674.35, 1,280,650.46 and 398,720.52

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Solution

The fourth proportional to 853,674.35, 1,280,650.46 and 398,720.52 is: 598,145.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,674.35 : 1,280,650.46 = 398,720.52 : x
  2. Step 2: Convert to fraction form
    853,674.35/1,280,650.46 = 398,720.52/x
  3. Step 3: Cross multiply
    853,674.35x = 1,280,650.46 × 398,720.52
  4. Step 4: Simplify right side
    853,674.35x = 510,621,615,355.84
  5. Step 5: Solve for x
    x = 510,621,615,355.84/853,674.35
  6. Step 6: Final answer
    x = 598,145.67

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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.