Finding the Fourth Proportional to 1,403,508,174.18, 1,936,764,548.06 and 768,305,785.38
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Solution
The fourth proportional to 1,403,508,174.18, 1,936,764,548.06 and 768,305,785.38 is: 1,060,219,979.17
Step by Step Solution
- Step 1: Write the proportion equation
1,403,508,174.18 : 1,936,764,548.06 = 768,305,785.38 : x - Step 2: Convert to fraction form
1,403,508,174.18/1,936,764,548.06 = 768,305,785.38/x - Step 3: Cross multiply
1,403,508,174.18x = 1,936,764,548.06 × 768,305,785.38 - Step 4: Simplify right side
1,403,508,174.18x = 1,488,027,407,193,379,072 - Step 5: Solve for x
x = 1,488,027,407,193,379,072/1,403,508,174.18 - Step 6: Final answer
x = 1,060,219,979.17
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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.