Finding the Fourth Proportional to 1,218,897,652.14, 1,682,182,502.15 and 690,355,662.84
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Solution
The fourth proportional to 1,218,897,652.14, 1,682,182,502.15 and 690,355,662.84 is: 952,749,571.92
Step by Step Solution
- Step 1: Write the proportion equation
1,218,897,652.14 : 1,682,182,502.15 = 690,355,662.84 : x - Step 2: Convert to fraction form
1,218,897,652.14/1,682,182,502.15 = 690,355,662.84/x - Step 3: Cross multiply
1,218,897,652.14x = 1,682,182,502.15 × 690,355,662.84 - Step 4: Simplify right side
1,218,897,652.14x = 1,161,304,216,286,161,152 - Step 5: Solve for x
x = 1,161,304,216,286,161,152/1,218,897,652.14 - Step 6: Final answer
x = 952,749,571.92
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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.