Finding the Fourth Proportional to 1,197,743,305.20, 1,650,531,264.30 and 915,805,194.18
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Solution
The fourth proportional to 1,197,743,305.20, 1,650,531,264.30 and 915,805,194.18 is: 1,262,010,898.70
Step by Step Solution
- Step 1: Write the proportion equation
1,197,743,305.20 : 1,650,531,264.30 = 915,805,194.18 : x - Step 2: Convert to fraction form
1,197,743,305.20/1,650,531,264.30 = 915,805,194.18/x - Step 3: Cross multiply
1,197,743,305.20x = 1,650,531,264.30 × 915,805,194.18 - Step 4: Simplify right side
1,197,743,305.20x = 1,511,565,105,002,422,272 - Step 5: Solve for x
x = 1,511,565,105,002,422,272/1,197,743,305.20 - Step 6: Final answer
x = 1,262,010,898.70
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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.