Finding the Fourth Proportional to 1,972,795,858.45, 2,721,817,717.55 and 1,345,174,664.65
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Solution
The fourth proportional to 1,972,795,858.45, 2,721,817,717.55 and 1,345,174,664.65 is: 1,855,904,258.80
Step by Step Solution
- Step 1: Write the proportion equation
1,972,795,858.45 : 2,721,817,717.55 = 1,345,174,664.65 : x - Step 2: Convert to fraction form
1,972,795,858.45/2,721,817,717.55 = 1,345,174,664.65/x - Step 3: Cross multiply
1,972,795,858.45x = 2,721,817,717.55 × 1,345,174,664.65 - Step 4: Simplify right side
1,972,795,858.45x = 3,661,320,235,437,024,256 - Step 5: Solve for x
x = 3,661,320,235,437,024,256/1,972,795,858.45 - Step 6: Final answer
x = 1,855,904,258.80
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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.