Finding the Fourth Proportional to 1,432,859.72, 1,977,629.08 and 821,423.08
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Solution
The fourth proportional to 1,432,859.72, 1,977,629.08 and 821,423.08 is: 1,133,725.90
Step by Step Solution
- Step 1: Write the proportion equation
1,432,859.72 : 1,977,629.08 = 821,423.08 : x - Step 2: Convert to fraction form
1,432,859.72/1,977,629.08 = 821,423.08/x - Step 3: Cross multiply
1,432,859.72x = 1,977,629.08 × 821,423.08 - Step 4: Simplify right side
1,432,859.72x = 1,624,470,169,991.17 - Step 5: Solve for x
x = 1,624,470,169,991.17/1,432,859.72 - Step 6: Final answer
x = 1,133,725.90
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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.