Home / 828,120,334.80-1,243,188,271.80-418,965,877.20

Finding the Fourth Proportional to 828,120,334.80, 1,243,188,271.80 and 418,965,877.20

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Solution

The fourth proportional to 828,120,334.80, 1,243,188,271.80 and 418,965,877.20 is: 628,958,670.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,120,334.80 : 1,243,188,271.80 = 418,965,877.20 : x
  2. Step 2: Convert to fraction form
    828,120,334.80/1,243,188,271.80 = 418,965,877.20/x
  3. Step 3: Cross multiply
    828,120,334.80x = 1,243,188,271.80 × 418,965,877.20
  4. Step 4: Simplify right side
    828,120,334.80x = 520,853,464,819,438,976
  5. Step 5: Solve for x
    x = 520,853,464,819,438,976/828,120,334.80
  6. Step 6: Final answer
    x = 628,958,670.54

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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.