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Finding the Fourth Proportional to 630,064,611.97, 869,489,322.11 and 347,807,216.77

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Solution

The fourth proportional to 630,064,611.97, 869,489,322.11 and 347,807,216.77 is: 479,974,046.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,064,611.97 : 869,489,322.11 = 347,807,216.77 : x
  2. Step 2: Convert to fraction form
    630,064,611.97/869,489,322.11 = 347,807,216.77/x
  3. Step 3: Cross multiply
    630,064,611.97x = 869,489,322.11 × 347,807,216.77
  4. Step 4: Simplify right side
    630,064,611.97x = 302,414,661,131,701,120
  5. Step 5: Solve for x
    x = 302,414,661,131,701,120/630,064,611.97
  6. Step 6: Final answer
    x = 479,974,046.13

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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.