Finding the Fourth Proportional to 2,485,693,881.78, 3,729,031,998.27 and 911,815,799.82
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Solution
The fourth proportional to 2,485,693,881.78, 3,729,031,998.27 and 911,815,799.82 is: 1,367,903,875.45
Step by Step Solution
- Step 1: Write the proportion equation
2,485,693,881.78 : 3,729,031,998.27 = 911,815,799.82 : x - Step 2: Convert to fraction form
2,485,693,881.78/3,729,031,998.27 = 911,815,799.82/x - Step 3: Cross multiply
2,485,693,881.78x = 3,729,031,998.27 × 911,815,799.82 - Step 4: Simplify right side
2,485,693,881.78x = 3,400,190,294,056,932,864 - Step 5: Solve for x
x = 3,400,190,294,056,932,864/2,485,693,881.78 - Step 6: Final answer
x = 1,367,903,875.45
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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.