Finding the Fourth Proportional to 1,248,493,577.21, 1,721,540,739.53 and 795,654,544.80
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Solution
The fourth proportional to 1,248,493,577.21, 1,721,540,739.53 and 795,654,544.80 is: 1,097,123,556.32
Step by Step Solution
- Step 1: Write the proportion equation
1,248,493,577.21 : 1,721,540,739.53 = 795,654,544.80 : x - Step 2: Convert to fraction form
1,248,493,577.21/1,721,540,739.53 = 795,654,544.80/x - Step 3: Cross multiply
1,248,493,577.21x = 1,721,540,739.53 × 795,654,544.80 - Step 4: Simplify right side
1,248,493,577.21x = 1,369,751,713,467,386,624 - Step 5: Solve for x
x = 1,369,751,713,467,386,624/1,248,493,577.21 - Step 6: Final answer
x = 1,097,123,556.32
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1.5x scale
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.