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Finding the Fourth Proportional to 394,013.20, 590,328.60 and 323,510.80

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Solution

The fourth proportional to 394,013.20, 590,328.60 and 323,510.80 is: 484,698.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,013.20 : 590,328.60 = 323,510.80 : x
  2. Step 2: Convert to fraction form
    394,013.20/590,328.60 = 323,510.80/x
  3. Step 3: Cross multiply
    394,013.20x = 590,328.60 × 323,510.80
  4. Step 4: Simplify right side
    394,013.20x = 190,977,677,648.88
  5. Step 5: Solve for x
    x = 190,977,677,648.88/394,013.20
  6. Step 6: Final answer
    x = 484,698.68

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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.