Finding the Fourth Proportional to 778,415,611.81, 1,074,212,850.29 and 439,395,447.00
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Solution
The fourth proportional to 778,415,611.81, 1,074,212,850.29 and 439,395,447.00 is: 606,365,325.11
Step by Step Solution
- Step 1: Write the proportion equation
778,415,611.81 : 1,074,212,850.29 = 439,395,447.00 : x - Step 2: Convert to fraction form
778,415,611.81/1,074,212,850.29 = 439,395,447.00/x - Step 3: Cross multiply
778,415,611.81x = 1,074,212,850.29 × 439,395,447.00 - Step 4: Simplify right side
778,415,611.81x = 472,004,235,529,004,160 - Step 5: Solve for x
x = 472,004,235,529,004,160/778,415,611.81 - Step 6: Final answer
x = 606,365,325.11
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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.