Finding the Fourth Proportional to 1,177,420,838.40, 1,766,389,783.68 and 348,309,573.12
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Solution
The fourth proportional to 1,177,420,838.40, 1,766,389,783.68 and 348,309,573.12 is: 522,540,837.95
Step by Step Solution
- Step 1: Write the proportion equation
1,177,420,838.40 : 1,766,389,783.68 = 348,309,573.12 : x - Step 2: Convert to fraction form
1,177,420,838.40/1,766,389,783.68 = 348,309,573.12/x - Step 3: Cross multiply
1,177,420,838.40x = 1,766,389,783.68 × 348,309,573.12 - Step 4: Simplify right side
1,177,420,838.40x = 615,250,471,517,110,016 - Step 5: Solve for x
x = 615,250,471,517,110,016/1,177,420,838.40 - Step 6: Final answer
x = 522,540,837.95
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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.