Finding the Fourth Proportional to 1,236,847,514.68, 1,706,837,544.58 and 920,721,459.68
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Solution
The fourth proportional to 1,236,847,514.68, 1,706,837,544.58 and 920,721,459.68 is: 1,270,586,662.32
Step by Step Solution
- Step 1: Write the proportion equation
1,236,847,514.68 : 1,706,837,544.58 = 920,721,459.68 : x - Step 2: Convert to fraction form
1,236,847,514.68/1,706,837,544.58 = 920,721,459.68/x - Step 3: Cross multiply
1,236,847,514.68x = 1,706,837,544.58 × 920,721,459.68 - Step 4: Simplify right side
1,236,847,514.68x = 1,571,521,955,472,315,648 - Step 5: Solve for x
x = 1,571,521,955,472,315,648/1,236,847,514.68 - Step 6: Final answer
x = 1,270,586,662.32
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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.