Finding the Fourth Proportional to 1,392,221,000,161.10, 1,921,265,072,612.20 and 774,910,470,414.48
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Solution
The fourth proportional to 1,392,221,000,161.10, 1,921,265,072,612.20 and 774,910,470,414.48 is: 1,069,376,500,596.21
Step by Step Solution
- Step 1: Write the proportion equation
1,392,221,000,161.10 : 1,921,265,072,612.20 = 774,910,470,414.48 : x - Step 2: Convert to fraction form
1,392,221,000,161.10/1,921,265,072,612.20 = 774,910,470,414.48/x - Step 3: Cross multiply
1,392,221,000,161.10x = 1,921,265,072,612.20 × 774,910,470,414.48 - Step 4: Simplify right side
1,392,221,000,161.10x = 1,488,808,421,208,829,898,784,768 - Step 5: Solve for x
x = 1,488,808,421,208,829,898,784,768/1,392,221,000,161.10 - Step 6: Final answer
x = 1,069,376,500,596.21
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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.