Finding the Fourth Proportional to 1,472,201,722.71, 2,031,605,678.39 and 812,151,825.75
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Solution
The fourth proportional to 1,472,201,722.71, 2,031,605,678.39 and 812,151,825.75 is: 1,120,751,480.90
Step by Step Solution
- Step 1: Write the proportion equation
1,472,201,722.71 : 2,031,605,678.39 = 812,151,825.75 : x - Step 2: Convert to fraction form
1,472,201,722.71/2,031,605,678.39 = 812,151,825.75/x - Step 3: Cross multiply
1,472,201,722.71x = 2,031,605,678.39 × 812,151,825.75 - Step 4: Simplify right side
1,472,201,722.71x = 1,649,972,260,904,444,928 - Step 5: Solve for x
x = 1,649,972,260,904,444,928/1,472,201,722.71 - Step 6: Final answer
x = 1,120,751,480.90
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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.