Finding the Fourth Proportional to 861,854,838.84, 1,288,060,036.94 and 629,175,520.49
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Solution
The fourth proportional to 861,854,838.84, 1,288,060,036.94 and 629,175,520.49 is: 940,315,941.42
Step by Step Solution
- Step 1: Write the proportion equation
861,854,838.84 : 1,288,060,036.94 = 629,175,520.49 : x - Step 2: Convert to fraction form
861,854,838.84/1,288,060,036.94 = 629,175,520.49/x - Step 3: Cross multiply
861,854,838.84x = 1,288,060,036.94 × 629,175,520.49 - Step 4: Simplify right side
861,854,838.84x = 810,415,844,154,506,880 - Step 5: Solve for x
x = 810,415,844,154,506,880/861,854,838.84 - Step 6: Final answer
x = 940,315,941.42
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.