Home / 509,056.20-763,584.30-259,705.80

Finding the Fourth Proportional to 509,056.20, 763,584.30 and 259,705.80

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Solution

The fourth proportional to 509,056.20, 763,584.30 and 259,705.80 is: 389,558.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,056.20 : 763,584.30 = 259,705.80 : x
  2. Step 2: Convert to fraction form
    509,056.20/763,584.30 = 259,705.80/x
  3. Step 3: Cross multiply
    509,056.20x = 763,584.30 × 259,705.80
  4. Step 4: Simplify right side
    509,056.20x = 198,307,271,498.94
  5. Step 5: Solve for x
    x = 198,307,271,498.94/509,056.20
  6. Step 6: Final answer
    x = 389,558.70

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Similar ratio
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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.