Home / 486,919.70-731,608.35-309,511.70

Finding the Fourth Proportional to 486,919.70, 731,608.35 and 309,511.70

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Solution

The fourth proportional to 486,919.70, 731,608.35 and 309,511.70 is: 465,048.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,919.70 : 731,608.35 = 309,511.70 : x
  2. Step 2: Convert to fraction form
    486,919.70/731,608.35 = 309,511.70/x
  3. Step 3: Cross multiply
    486,919.70x = 731,608.35 × 309,511.70
  4. Step 4: Simplify right side
    486,919.70x = 226,441,344,142.70
  5. Step 5: Solve for x
    x = 226,441,344,142.70/486,919.70
  6. Step 6: Final answer
    x = 465,048.64

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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.