Home / 721,811,212.20-1,082,716,818.30-261,764,389.80

Finding the Fourth Proportional to 721,811,212.20, 1,082,716,818.30 and 261,764,389.80

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Solution

The fourth proportional to 721,811,212.20, 1,082,716,818.30 and 261,764,389.80 is: 392,646,584.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,811,212.20 : 1,082,716,818.30 = 261,764,389.80 : x
  2. Step 2: Convert to fraction form
    721,811,212.20/1,082,716,818.30 = 261,764,389.80/x
  3. Step 3: Cross multiply
    721,811,212.20x = 1,082,716,818.30 × 261,764,389.80
  4. Step 4: Simplify right side
    721,811,212.20x = 283,416,707,268,496,960
  5. Step 5: Solve for x
    x = 283,416,707,268,496,960/721,811,212.20
  6. Step 6: Final answer
    x = 392,646,584.70

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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.