Finding the Fourth Proportional to 831,991.30, 1,148,049.25 and 469,393.99
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Solution
The fourth proportional to 831,991.30, 1,148,049.25 and 469,393.99 is: 647,707.99
Step by Step Solution
- Step 1: Write the proportion equation
831,991.30 : 1,148,049.25 = 469,393.99 : x - Step 2: Convert to fraction form
831,991.30/1,148,049.25 = 469,393.99/x - Step 3: Cross multiply
831,991.30x = 1,148,049.25 × 469,393.99 - Step 4: Simplify right side
831,991.30x = 538,887,414,130.40 - Step 5: Solve for x
x = 538,887,414,130.40/831,991.30 - Step 6: Final answer
x = 647,707.99
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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.