Finding the Fourth Proportional to 2,178,689.36, 3,006,548.16 and 1,211,798.88
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Solution
The fourth proportional to 2,178,689.36, 3,006,548.16 and 1,211,798.88 is: 1,672,258.45
Step by Step Solution
- Step 1: Write the proportion equation
2,178,689.36 : 3,006,548.16 = 1,211,798.88 : x - Step 2: Convert to fraction form
2,178,689.36/3,006,548.16 = 1,211,798.88/x - Step 3: Cross multiply
2,178,689.36x = 3,006,548.16 × 1,211,798.88 - Step 4: Simplify right side
2,178,689.36x = 3,643,331,692,954.06 - Step 5: Solve for x
x = 3,643,331,692,954.06/2,178,689.36 - Step 6: Final answer
x = 1,672,258.45
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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.