Finding the Fourth Proportional to 852,368,886.20, 1,278,553,329.30 and 307,128,207.80
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Solution
The fourth proportional to 852,368,886.20, 1,278,553,329.30 and 307,128,207.80 is: 460,692,311.70
Step by Step Solution
- Step 1: Write the proportion equation
852,368,886.20 : 1,278,553,329.30 = 307,128,207.80 : x - Step 2: Convert to fraction form
852,368,886.20/1,278,553,329.30 = 307,128,207.80/x - Step 3: Cross multiply
852,368,886.20x = 1,278,553,329.30 × 307,128,207.80 - Step 4: Simplify right side
852,368,886.20x = 392,679,792,604,632,256 - Step 5: Solve for x
x = 392,679,792,604,632,256/852,368,886.20 - Step 6: Final answer
x = 460,692,311.70
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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.