Home / 677,856,820.80-1,016,785,231.20-193,119,643.20

Finding the Fourth Proportional to 677,856,820.80, 1,016,785,231.20 and 193,119,643.20

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Solution

The fourth proportional to 677,856,820.80, 1,016,785,231.20 and 193,119,643.20 is: 289,679,464.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,856,820.80 : 1,016,785,231.20 = 193,119,643.20 : x
  2. Step 2: Convert to fraction form
    677,856,820.80/1,016,785,231.20 = 193,119,643.20/x
  3. Step 3: Cross multiply
    677,856,820.80x = 1,016,785,231.20 × 193,119,643.20
  4. Step 4: Simplify right side
    677,856,820.80x = 196,361,201,060,373,504
  5. Step 5: Solve for x
    x = 196,361,201,060,373,504/677,856,820.80
  6. Step 6: Final answer
    x = 289,679,464.80

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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.