Finding the Fourth Proportional to 1,422,804.18, 1,963,455.48 and 778,236.96
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Solution
The fourth proportional to 1,422,804.18, 1,963,455.48 and 778,236.96 is: 1,073,959.19
Step by Step Solution
- Step 1: Write the proportion equation
1,422,804.18 : 1,963,455.48 = 778,236.96 : x - Step 2: Convert to fraction form
1,422,804.18/1,963,455.48 = 778,236.96/x - Step 3: Cross multiply
1,422,804.18x = 1,963,455.48 × 778,236.96 - Step 4: Simplify right side
1,422,804.18x = 1,528,033,623,850.54 - Step 5: Solve for x
x = 1,528,033,623,850.54/1,422,804.18 - Step 6: Final answer
x = 1,073,959.19
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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.