Finding the Fourth Proportional to 892,368,411.20, 1,338,552,616.80 and 831,902,235.20
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Solution
The fourth proportional to 892,368,411.20, 1,338,552,616.80 and 831,902,235.20 is: 1,247,853,352.80
Step by Step Solution
- Step 1: Write the proportion equation
892,368,411.20 : 1,338,552,616.80 = 831,902,235.20 : x - Step 2: Convert to fraction form
892,368,411.20/1,338,552,616.80 = 831,902,235.20/x - Step 3: Cross multiply
892,368,411.20x = 1,338,552,616.80 × 831,902,235.20 - Step 4: Simplify right side
892,368,411.20x = 1,113,544,913,848,729,088 - Step 5: Solve for x
x = 1,113,544,913,848,729,088/892,368,411.20 - Step 6: Final answer
x = 1,247,853,352.80
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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.