Finding the Fourth Proportional to 909,660,664.98, 1,255,331,719.66 and 491,972,950.26
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Solution
The fourth proportional to 909,660,664.98, 1,255,331,719.66 and 491,972,950.26 is: 678,922,672.43
Step by Step Solution
- Step 1: Write the proportion equation
909,660,664.98 : 1,255,331,719.66 = 491,972,950.26 : x - Step 2: Convert to fraction form
909,660,664.98/1,255,331,719.66 = 491,972,950.26/x - Step 3: Cross multiply
909,660,664.98x = 1,255,331,719.66 × 491,972,950.26 - Step 4: Simplify right side
909,660,664.98x = 617,589,249,676,089,472 - Step 5: Solve for x
x = 617,589,249,676,089,472/909,660,664.98 - Step 6: Final answer
x = 678,922,672.43
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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.