Finding the Fourth Proportional to 1,211,586.51, 1,671,989.40 and 667,722.31
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Solution
The fourth proportional to 1,211,586.51, 1,671,989.40 and 667,722.31 is: 921,456.79
Step by Step Solution
- Step 1: Write the proportion equation
1,211,586.51 : 1,671,989.40 = 667,722.31 : x - Step 2: Convert to fraction form
1,211,586.51/1,671,989.40 = 667,722.31/x - Step 3: Cross multiply
1,211,586.51x = 1,671,989.40 × 667,722.31 - Step 4: Simplify right side
1,211,586.51x = 1,116,424,623,342.81 - Step 5: Solve for x
x = 1,116,424,623,342.81/1,211,586.51 - Step 6: Final answer
x = 921,456.79
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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.