Finding the Fourth Proportional to 1,121,036,190.80, 1,681,554,286.20 and 604,475,538.80
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Solution
The fourth proportional to 1,121,036,190.80, 1,681,554,286.20 and 604,475,538.80 is: 906,713,308.20
Step by Step Solution
- Step 1: Write the proportion equation
1,121,036,190.80 : 1,681,554,286.20 = 604,475,538.80 : x - Step 2: Convert to fraction form
1,121,036,190.80/1,681,554,286.20 = 604,475,538.80/x - Step 3: Cross multiply
1,121,036,190.80x = 1,681,554,286.20 × 604,475,538.80 - Step 4: Simplify right side
1,121,036,190.80x = 1,016,458,433,172,194,304 - Step 5: Solve for x
x = 1,016,458,433,172,194,304/1,121,036,190.80 - Step 6: Final answer
x = 906,713,308.20
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Double scale
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Similar ratio
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1.5x scale
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.