Finding the Fourth Proportional to 1,128,811.92, 1,557,752.31 and 612,552.81
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Solution
The fourth proportional to 1,128,811.92, 1,557,752.31 and 612,552.81 is: 845,318.47
Step by Step Solution
- Step 1: Write the proportion equation
1,128,811.92 : 1,557,752.31 = 612,552.81 : x - Step 2: Convert to fraction form
1,128,811.92/1,557,752.31 = 612,552.81/x - Step 3: Cross multiply
1,128,811.92x = 1,557,752.31 × 612,552.81 - Step 4: Simplify right side
1,128,811.92x = 954,205,560,616.06 - Step 5: Solve for x
x = 954,205,560,616.06/1,128,811.92 - Step 6: Final answer
x = 845,318.47
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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.