Finding the Fourth Proportional to 1,204,263,713.09, 1,661,749,134.52 and 668,437,965.36
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Solution
The fourth proportional to 1,204,263,713.09, 1,661,749,134.52 and 668,437,965.36 is: 922,369,575.99
Step by Step Solution
- Step 1: Write the proportion equation
1,204,263,713.09 : 1,661,749,134.52 = 668,437,965.36 : x - Step 2: Convert to fraction form
1,204,263,713.09/1,661,749,134.52 = 668,437,965.36/x - Step 3: Cross multiply
1,204,263,713.09x = 1,661,749,134.52 × 668,437,965.36 - Step 4: Simplify right side
1,204,263,713.09x = 1,110,776,210,417,289,728 - Step 5: Solve for x
x = 1,110,776,210,417,289,728/1,204,263,713.09 - Step 6: Final answer
x = 922,369,575.99
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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.