Finding the Fourth Proportional to 1,177,123.09, 1,624,323.95 and 687,135.14
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Solution
The fourth proportional to 1,177,123.09, 1,624,323.95 and 687,135.14 is: 948,184.66
Step by Step Solution
- Step 1: Write the proportion equation
1,177,123.09 : 1,624,323.95 = 687,135.14 : x - Step 2: Convert to fraction form
1,177,123.09/1,624,323.95 = 687,135.14/x - Step 3: Cross multiply
1,177,123.09x = 1,624,323.95 × 687,135.14 - Step 4: Simplify right side
1,177,123.09x = 1,116,130,053,231.31 - Step 5: Solve for x
x = 1,116,130,053,231.31/1,177,123.09 - Step 6: Final answer
x = 948,184.66
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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.