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Finding the Fourth Proportional to 437,520.30, 655,891.65 and 287,832.30

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Solution

The fourth proportional to 437,520.30, 655,891.65 and 287,832.30 is: 431,492.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,520.30 : 655,891.65 = 287,832.30 : x
  2. Step 2: Convert to fraction form
    437,520.30/655,891.65 = 287,832.30/x
  3. Step 3: Cross multiply
    437,520.30x = 655,891.65 × 287,832.30
  4. Step 4: Simplify right side
    437,520.30x = 188,786,802,170.30
  5. Step 5: Solve for x
    x = 188,786,802,170.30/437,520.30
  6. Step 6: Final answer
    x = 431,492.67

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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.