Finding the Fourth Proportional to 1,135,684,966.20, 1,703,527,449.30 and 408,579,199.80
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Solution
The fourth proportional to 1,135,684,966.20, 1,703,527,449.30 and 408,579,199.80 is: 612,868,799.70
Step by Step Solution
- Step 1: Write the proportion equation
1,135,684,966.20 : 1,703,527,449.30 = 408,579,199.80 : x - Step 2: Convert to fraction form
1,135,684,966.20/1,703,527,449.30 = 408,579,199.80/x - Step 3: Cross multiply
1,135,684,966.20x = 1,703,527,449.30 × 408,579,199.80 - Step 4: Simplify right side
1,135,684,966.20x = 696,025,882,072,329,088 - Step 5: Solve for x
x = 696,025,882,072,329,088/1,135,684,966.20 - Step 6: Final answer
x = 612,868,799.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.