Finding the Fourth Proportional to 1,931,409.06, 2,665,674.36 and 1,115,466.09
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Solution
The fourth proportional to 1,931,409.06, 2,665,674.36 and 1,115,466.09 is: 1,539,533.71
Step by Step Solution
- Step 1: Write the proportion equation
1,931,409.06 : 2,665,674.36 = 1,115,466.09 : x - Step 2: Convert to fraction form
1,931,409.06/2,665,674.36 = 1,115,466.09/x - Step 3: Cross multiply
1,931,409.06x = 2,665,674.36 × 1,115,466.09 - Step 4: Simplify right side
1,931,409.06x = 2,973,469,355,562.45 - Step 5: Solve for x
x = 2,973,469,355,562.45/1,931,409.06 - Step 6: Final answer
x = 1,539,533.71
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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.