Finding the Fourth Proportional to 1,218,772,674.65, 1,682,421,204.20 and 822,832,005.44
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Solution
The fourth proportional to 1,218,772,674.65, 1,682,421,204.20 and 822,832,005.44 is: 1,135,855,801.69
Step by Step Solution
- Step 1: Write the proportion equation
1,218,772,674.65 : 1,682,421,204.20 = 822,832,005.44 : x - Step 2: Convert to fraction form
1,218,772,674.65/1,682,421,204.20 = 822,832,005.44/x - Step 3: Cross multiply
1,218,772,674.65x = 1,682,421,204.20 × 822,832,005.44 - Step 4: Simplify right side
1,218,772,674.65x = 1,384,350,013,434,139,392 - Step 5: Solve for x
x = 1,384,350,013,434,139,392/1,218,772,674.65 - Step 6: Final answer
x = 1,135,855,801.69
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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.