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Finding the Fourth Proportional to 630,064,612.53, 869,489,322.89 and 347,807,217.33

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Solution

The fourth proportional to 630,064,612.53, 869,489,322.89 and 347,807,217.33 is: 479,974,046.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,064,612.53 : 869,489,322.89 = 347,807,217.33 : x
  2. Step 2: Convert to fraction form
    630,064,612.53/869,489,322.89 = 347,807,217.33/x
  3. Step 3: Cross multiply
    630,064,612.53x = 869,489,322.89 × 347,807,217.33
  4. Step 4: Simplify right side
    630,064,612.53x = 302,414,661,890,777,728
  5. Step 5: Solve for x
    x = 302,414,661,890,777,728/630,064,612.53
  6. Step 6: Final answer
    x = 479,974,046.91

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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.