Home / 439,748.80-659,623.20-399,070.60

Finding the Fourth Proportional to 439,748.80, 659,623.20 and 399,070.60

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Solution

The fourth proportional to 439,748.80, 659,623.20 and 399,070.60 is: 598,605.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,748.80 : 659,623.20 = 399,070.60 : x
  2. Step 2: Convert to fraction form
    439,748.80/659,623.20 = 399,070.60/x
  3. Step 3: Cross multiply
    439,748.80x = 659,623.20 × 399,070.60
  4. Step 4: Simplify right side
    439,748.80x = 263,236,226,197.92
  5. Step 5: Solve for x
    x = 263,236,226,197.92/439,748.80
  6. Step 6: Final answer
    x = 598,605.90

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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.