Home / 721,880.43-1,082,446.87-384,830.55

Finding the Fourth Proportional to 721,880.43, 1,082,446.87 and 384,830.55

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Solution

The fourth proportional to 721,880.43, 1,082,446.87 and 384,830.55 is: 577,046.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,880.43 : 1,082,446.87 = 384,830.55 : x
  2. Step 2: Convert to fraction form
    721,880.43/1,082,446.87 = 384,830.55/x
  3. Step 3: Cross multiply
    721,880.43x = 1,082,446.87 × 384,830.55
  4. Step 4: Simplify right side
    721,880.43x = 416,558,624,327.88
  5. Step 5: Solve for x
    x = 416,558,624,327.88/721,880.43
  6. Step 6: Final answer
    x = 577,046.57

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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.