Finding the Fourth Proportional to 661,859,394.08, 991,497,538.36 and 515,608,159.28
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Solution
The fourth proportional to 661,859,394.08, 991,497,538.36 and 515,608,159.28 is: 772,406,080.89
Step by Step Solution
- Step 1: Write the proportion equation
661,859,394.08 : 991,497,538.36 = 515,608,159.28 : x - Step 2: Convert to fraction form
661,859,394.08/991,497,538.36 = 515,608,159.28/x - Step 3: Cross multiply
661,859,394.08x = 991,497,538.36 × 515,608,159.28 - Step 4: Simplify right side
661,859,394.08x = 511,224,220,684,450,752 - Step 5: Solve for x
x = 511,224,220,684,450,752/661,859,394.08 - Step 6: Final answer
x = 772,406,080.89
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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.