Finding the Fourth Proportional to 1,210,239,256.18, 1,670,192,234.13 and 740,192,942.74
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Solution
The fourth proportional to 1,210,239,256.18, 1,670,192,234.13 and 740,192,942.74 is: 1,021,504,217.79
Step by Step Solution
- Step 1: Write the proportion equation
1,210,239,256.18 : 1,670,192,234.13 = 740,192,942.74 : x - Step 2: Convert to fraction form
1,210,239,256.18/1,670,192,234.13 = 740,192,942.74/x - Step 3: Cross multiply
1,210,239,256.18x = 1,670,192,234.13 × 740,192,942.74 - Step 4: Simplify right side
1,210,239,256.18x = 1,236,264,504,722,179,840 - Step 5: Solve for x
x = 1,236,264,504,722,179,840/1,210,239,256.18 - Step 6: Final answer
x = 1,021,504,217.79
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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.