Home / 691,315.20-1,036,972.80-192,679.20

Finding the Fourth Proportional to 691,315.20, 1,036,972.80 and 192,679.20

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Solution

The fourth proportional to 691,315.20, 1,036,972.80 and 192,679.20 is: 289,018.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,315.20 : 1,036,972.80 = 192,679.20 : x
  2. Step 2: Convert to fraction form
    691,315.20/1,036,972.80 = 192,679.20/x
  3. Step 3: Cross multiply
    691,315.20x = 1,036,972.80 × 192,679.20
  4. Step 4: Simplify right side
    691,315.20x = 199,803,089,525.76
  5. Step 5: Solve for x
    x = 199,803,089,525.76/691,315.20
  6. Step 6: Final answer
    x = 289,018.80

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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.