Finding the Fourth Proportional to 687,899,381.58, 1,030,828,704.84 and 505,253,738.70
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Solution
The fourth proportional to 687,899,381.58, 1,030,828,704.84 and 505,253,738.70 is: 757,131,160.50
Step by Step Solution
- Step 1: Write the proportion equation
687,899,381.58 : 1,030,828,704.84 = 505,253,738.70 : x - Step 2: Convert to fraction form
687,899,381.58/1,030,828,704.84 = 505,253,738.70/x - Step 3: Cross multiply
687,899,381.58x = 1,030,828,704.84 × 505,253,738.70 - Step 4: Simplify right side
687,899,381.58x = 520,830,057,079,688,768 - Step 5: Solve for x
x = 520,830,057,079,688,768/687,899,381.58 - Step 6: Final answer
x = 757,131,160.50
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.