Finding the Fourth Proportional to 1,221,127,232.40, 1,831,690,848.60 and 731,351,206.80
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Solution
The fourth proportional to 1,221,127,232.40, 1,831,690,848.60 and 731,351,206.80 is: 1,097,026,810.20
Step by Step Solution
- Step 1: Write the proportion equation
1,221,127,232.40 : 1,831,690,848.60 = 731,351,206.80 : x - Step 2: Convert to fraction form
1,221,127,232.40/1,831,690,848.60 = 731,351,206.80/x - Step 3: Cross multiply
1,221,127,232.40x = 1,831,690,848.60 × 731,351,206.80 - Step 4: Simplify right side
1,221,127,232.40x = 1,339,609,312,608,125,952 - Step 5: Solve for x
x = 1,339,609,312,608,125,952/1,221,127,232.40 - Step 6: Final answer
x = 1,097,026,810.20
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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.