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Finding the Fourth Proportional to 447,790.80, 670,519.80 and 426,795.60

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Solution

The fourth proportional to 447,790.80, 670,519.80 and 426,795.60 is: 639,081.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,790.80 : 670,519.80 = 426,795.60 : x
  2. Step 2: Convert to fraction form
    447,790.80/670,519.80 = 426,795.60/x
  3. Step 3: Cross multiply
    447,790.80x = 670,519.80 × 426,795.60
  4. Step 4: Simplify right side
    447,790.80x = 286,174,900,352.88
  5. Step 5: Solve for x
    x = 286,174,900,352.88/447,790.80
  6. Step 6: Final answer
    x = 639,081.69

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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.