Finding the Fourth Proportional to 1,238,785,631.63, 1,858,128,053.33 and 306,084,991.01
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Solution
The fourth proportional to 1,238,785,631.63, 1,858,128,053.33 and 306,084,991.01 is: 459,115,034.89
Step by Step Solution
- Step 1: Write the proportion equation
1,238,785,631.63 : 1,858,128,053.33 = 306,084,991.01 : x - Step 2: Convert to fraction form
1,238,785,631.63/1,858,128,053.33 = 306,084,991.01/x - Step 3: Cross multiply
1,238,785,631.63x = 1,858,128,053.33 × 306,084,991.01 - Step 4: Simplify right side
1,238,785,631.63x = 568,745,108,488,120,768 - Step 5: Solve for x
x = 568,745,108,488,120,768/1,238,785,631.63 - Step 6: Final answer
x = 459,115,034.89
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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.