Finding the Fourth Proportional to 1,266,957,972.19, 1,901,531,062.44 and 879,053,207.58
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Solution
The fourth proportional to 1,266,957,972.19, 1,901,531,062.44 and 879,053,207.58 is: 1,319,338,933.45
Step by Step Solution
- Step 1: Write the proportion equation
1,266,957,972.19 : 1,901,531,062.44 = 879,053,207.58 : x - Step 2: Convert to fraction form
1,266,957,972.19/1,901,531,062.44 = 879,053,207.58/x - Step 3: Cross multiply
1,266,957,972.19x = 1,901,531,062.44 × 879,053,207.58 - Step 4: Simplify right side
1,266,957,972.19x = 1,671,546,979,750,887,424 - Step 5: Solve for x
x = 1,671,546,979,750,887,424/1,266,957,972.19 - Step 6: Final answer
x = 1,319,338,933.45
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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.