Finding the Fourth Proportional to 1,212,991.92, 1,676,143.08 and 1,038,529.80
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Solution
The fourth proportional to 1,212,991.92, 1,676,143.08 and 1,038,529.80 is: 1,435,066.89
Step by Step Solution
- Step 1: Write the proportion equation
1,212,991.92 : 1,676,143.08 = 1,038,529.80 : x - Step 2: Convert to fraction form
1,212,991.92/1,676,143.08 = 1,038,529.80/x - Step 3: Cross multiply
1,212,991.92x = 1,676,143.08 × 1,038,529.80 - Step 4: Simplify right side
1,212,991.92x = 1,740,724,537,643.78 - Step 5: Solve for x
x = 1,740,724,537,643.78/1,212,991.92 - Step 6: Final answer
x = 1,435,066.89
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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.