Home / 720,548,314.20-1,080,434,075.76-388,733,234.94

Finding the Fourth Proportional to 720,548,314.20, 1,080,434,075.76 and 388,733,234.94

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Solution

The fourth proportional to 720,548,314.20, 1,080,434,075.76 and 388,733,234.94 is: 582,890,314.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,548,314.20 : 1,080,434,075.76 = 388,733,234.94 : x
  2. Step 2: Convert to fraction form
    720,548,314.20/1,080,434,075.76 = 388,733,234.94/x
  3. Step 3: Cross multiply
    720,548,314.20x = 1,080,434,075.76 × 388,733,234.94
  4. Step 4: Simplify right side
    720,548,314.20x = 420,000,633,409,593,856
  5. Step 5: Solve for x
    x = 420,000,633,409,593,856/720,548,314.20
  6. Step 6: Final answer
    x = 582,890,314.41

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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.