Home / 808,836.70-1,214,239.20-409,271.80

Finding the Fourth Proportional to 808,836.70, 1,214,239.20 and 409,271.80

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Solution

The fourth proportional to 808,836.70, 1,214,239.20 and 409,271.80 is: 614,405.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,836.70 : 1,214,239.20 = 409,271.80 : x
  2. Step 2: Convert to fraction form
    808,836.70/1,214,239.20 = 409,271.80/x
  3. Step 3: Cross multiply
    808,836.70x = 1,214,239.20 × 409,271.80
  4. Step 4: Simplify right side
    808,836.70x = 496,953,863,014.56
  5. Step 5: Solve for x
    x = 496,953,863,014.56/808,836.70
  6. Step 6: Final answer
    x = 614,405.68

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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.