Finding the Fourth Proportional to 1,490,471.40, 2,057,119.56 and 878,588.76
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Solution
The fourth proportional to 1,490,471.40, 2,057,119.56 and 878,588.76 is: 1,212,611.07
Step by Step Solution
- Step 1: Write the proportion equation
1,490,471.40 : 2,057,119.56 = 878,588.76 : x - Step 2: Convert to fraction form
1,490,471.40/2,057,119.56 = 878,588.76/x - Step 3: Cross multiply
1,490,471.40x = 2,057,119.56 × 878,588.76 - Step 4: Simplify right side
1,490,471.40x = 1,807,362,123,392.15 - Step 5: Solve for x
x = 1,807,362,123,392.15/1,490,471.40 - Step 6: Final answer
x = 1,212,611.07
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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.