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Finding the Fourth Proportional to 437,455.80, 655,794.90 and 287,767.80

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Solution

The fourth proportional to 437,455.80, 655,794.90 and 287,767.80 is: 431,395.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,455.80 : 655,794.90 = 287,767.80 : x
  2. Step 2: Convert to fraction form
    437,455.80/655,794.90 = 287,767.80/x
  3. Step 3: Cross multiply
    437,455.80x = 655,794.90 × 287,767.80
  4. Step 4: Simplify right side
    437,455.80x = 188,716,655,624.22
  5. Step 5: Solve for x
    x = 188,716,655,624.22/437,455.80
  6. Step 6: Final answer
    x = 431,395.94

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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.