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Finding the Fourth Proportional to 437,299.80, 655,949.70 and 288,000.60

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Solution

The fourth proportional to 437,299.80, 655,949.70 and 288,000.60 is: 432,000.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,299.80 : 655,949.70 = 288,000.60 : x
  2. Step 2: Convert to fraction form
    437,299.80/655,949.70 = 288,000.60/x
  3. Step 3: Cross multiply
    437,299.80x = 655,949.70 × 288,000.60
  4. Step 4: Simplify right side
    437,299.80x = 188,913,907,169.82
  5. Step 5: Solve for x
    x = 188,913,907,169.82/437,299.80
  6. Step 6: Final answer
    x = 432,000.90

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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.