Finding the Fourth Proportional to 1,128,762.24, 1,557,721.44 and 645,406.08
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Solution
The fourth proportional to 1,128,762.24, 1,557,721.44 and 645,406.08 is: 890,677.29
Step by Step Solution
- Step 1: Write the proportion equation
1,128,762.24 : 1,557,721.44 = 645,406.08 : x - Step 2: Convert to fraction form
1,128,762.24/1,557,721.44 = 645,406.08/x - Step 3: Cross multiply
1,128,762.24x = 1,557,721.44 × 645,406.08 - Step 4: Simplify right side
1,128,762.24x = 1,005,362,888,322.36 - Step 5: Solve for x
x = 1,005,362,888,322.36/1,128,762.24 - Step 6: Final answer
x = 890,677.29
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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.