Finding the Fourth Proportional to 1,392,221,000,181.10, 1,921,265,072,639.70 and 774,910,470,434.49
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Solution
The fourth proportional to 1,392,221,000,181.10, 1,921,265,072,639.70 and 774,910,470,434.49 is: 1,069,376,500,623.77
Step by Step Solution
- Step 1: Write the proportion equation
1,392,221,000,181.10 : 1,921,265,072,639.70 = 774,910,470,434.49 : x - Step 2: Convert to fraction form
1,392,221,000,181.10/1,921,265,072,639.70 = 774,910,470,434.49/x - Step 3: Cross multiply
1,392,221,000,181.10x = 1,921,265,072,639.70 × 774,910,470,434.49 - Step 4: Simplify right side
1,392,221,000,181.10x = 1,488,808,421,268,584,436,596,736 - Step 5: Solve for x
x = 1,488,808,421,268,584,436,596,736/1,392,221,000,181.10 - Step 6: Final answer
x = 1,069,376,500,623.77
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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.