Finding the Fourth Proportional to 898,082.18, 1,240,974.57 and 639,510.21
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Solution
The fourth proportional to 898,082.18, 1,240,974.57 and 639,510.21 is: 883,678.50
Step by Step Solution
- Step 1: Write the proportion equation
898,082.18 : 1,240,974.57 = 639,510.21 : x - Step 2: Convert to fraction form
898,082.18/1,240,974.57 = 639,510.21/x - Step 3: Cross multiply
898,082.18x = 1,240,974.57 × 639,510.21 - Step 4: Simplify right side
898,082.18x = 793,615,907,865.36 - Step 5: Solve for x
x = 793,615,907,865.36/898,082.18 - Step 6: Final answer
x = 883,678.50
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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.