Finding the Fourth Proportional to 1,378,441,599.75, 1,902,261,548.07 and 751,912,814.07
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Solution
The fourth proportional to 1,378,441,599.75, 1,902,261,548.07 and 751,912,814.07 is: 1,037,646,305.77
Step by Step Solution
- Step 1: Write the proportion equation
1,378,441,599.75 : 1,902,261,548.07 = 751,912,814.07 : x - Step 2: Convert to fraction form
1,378,441,599.75/1,902,261,548.07 = 751,912,814.07/x - Step 3: Cross multiply
1,378,441,599.75x = 1,902,261,548.07 × 751,912,814.07 - Step 4: Simplify right side
1,378,441,599.75x = 1,430,334,833,706,468,352 - Step 5: Solve for x
x = 1,430,334,833,706,468,352/1,378,441,599.75 - Step 6: Final answer
x = 1,037,646,305.77
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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.