Finding the Fourth Proportional to 1,128,277.32, 1,557,160.44 and 644,862.84
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Solution
The fourth proportional to 1,128,277.32, 1,557,160.44 and 644,862.84 is: 889,989.44
Step by Step Solution
- Step 1: Write the proportion equation
1,128,277.32 : 1,557,160.44 = 644,862.84 : x - Step 2: Convert to fraction form
1,128,277.32/1,557,160.44 = 644,862.84/x - Step 3: Cross multiply
1,128,277.32x = 1,557,160.44 × 644,862.84 - Step 4: Simplify right side
1,128,277.32x = 1,004,154,903,674.05 - Step 5: Solve for x
x = 1,004,154,903,674.05/1,128,277.32 - Step 6: Final answer
x = 889,989.44
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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.