Home / 721,921.85-1,082,518.27-422,492.39

Finding the Fourth Proportional to 721,921.85, 1,082,518.27 and 422,492.39

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Solution

The fourth proportional to 721,921.85, 1,082,518.27 and 422,492.39 is: 633,525.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,921.85 : 1,082,518.27 = 422,492.39 : x
  2. Step 2: Convert to fraction form
    721,921.85/1,082,518.27 = 422,492.39/x
  3. Step 3: Cross multiply
    721,921.85x = 1,082,518.27 × 422,492.39
  4. Step 4: Simplify right side
    721,921.85x = 457,355,731,110.97
  5. Step 5: Solve for x
    x = 457,355,731,110.97/721,921.85
  6. Step 6: Final answer
    x = 633,525.26

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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.