Home / 789,728,270.78-1,089,811,613.85-437,296,694.66

Finding the Fourth Proportional to 789,728,270.78, 1,089,811,613.85 and 437,296,694.66

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Solution

The fourth proportional to 789,728,270.78, 1,089,811,613.85 and 437,296,694.66 is: 603,462,018.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,728,270.78 : 1,089,811,613.85 = 437,296,694.66 : x
  2. Step 2: Convert to fraction form
    789,728,270.78/1,089,811,613.85 = 437,296,694.66/x
  3. Step 3: Cross multiply
    789,728,270.78x = 1,089,811,613.85 × 437,296,694.66
  4. Step 4: Simplify right side
    789,728,270.78x = 476,571,016,538,685,248
  5. Step 5: Solve for x
    x = 476,571,016,538,685,248/789,728,270.78
  6. Step 6: Final answer
    x = 603,462,018.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.