Finding the Fourth Proportional to 1,239,549.28, 1,710,581.56 and 688,266.18
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Solution
The fourth proportional to 1,239,549.28, 1,710,581.56 and 688,266.18 is: 949,809.30
Step by Step Solution
- Step 1: Write the proportion equation
1,239,549.28 : 1,710,581.56 = 688,266.18 : x - Step 2: Convert to fraction form
1,239,549.28/1,710,581.56 = 688,266.18/x - Step 3: Cross multiply
1,239,549.28x = 1,710,581.56 × 688,266.18 - Step 4: Simplify right side
1,239,549.28x = 1,177,335,435,879.64 - Step 5: Solve for x
x = 1,177,335,435,879.64/1,239,549.28 - Step 6: Final answer
x = 949,809.30
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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.