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Finding the Fourth Proportional to 671,132.80, 1,004,074.80 and 434,936.80

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Solution

The fourth proportional to 671,132.80, 1,004,074.80 and 434,936.80 is: 650,704.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,132.80 : 1,004,074.80 = 434,936.80 : x
  2. Step 2: Convert to fraction form
    671,132.80/1,004,074.80 = 434,936.80/x
  3. Step 3: Cross multiply
    671,132.80x = 1,004,074.80 × 434,936.80
  4. Step 4: Simplify right side
    671,132.80x = 436,709,080,472.64
  5. Step 5: Solve for x
    x = 436,709,080,472.64/671,132.80
  6. Step 6: Final answer
    x = 650,704.42

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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.