Home / 856,311.05-1,284,646.94-323,820.29

Finding the Fourth Proportional to 856,311.05, 1,284,646.94 and 323,820.29

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Solution

The fourth proportional to 856,311.05, 1,284,646.94 and 323,820.29 is: 485,798.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,311.05 : 1,284,646.94 = 323,820.29 : x
  2. Step 2: Convert to fraction form
    856,311.05/1,284,646.94 = 323,820.29/x
  3. Step 3: Cross multiply
    856,311.05x = 1,284,646.94 × 323,820.29
  4. Step 4: Simplify right side
    856,311.05x = 415,994,747,465.26
  5. Step 5: Solve for x
    x = 415,994,747,465.26/856,311.05
  6. Step 6: Final answer
    x = 485,798.64

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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.