Finding the Fourth Proportional to 861,059,767.68, 1,188,629,780.50 and 578,965,717.98
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Solution
The fourth proportional to 861,059,767.68, 1,188,629,780.50 and 578,965,717.98 is: 799,219,659.43
Step by Step Solution
- Step 1: Write the proportion equation
861,059,767.68 : 1,188,629,780.50 = 578,965,717.98 : x - Step 2: Convert to fraction form
861,059,767.68/1,188,629,780.50 = 578,965,717.98/x - Step 3: Cross multiply
861,059,767.68x = 1,188,629,780.50 × 578,965,717.98 - Step 4: Simplify right side
861,059,767.68x = 688,175,894,273,649,152 - Step 5: Solve for x
x = 688,175,894,273,649,152/861,059,767.68 - Step 6: Final answer
x = 799,219,659.43
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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.