Finding the Fourth Proportional to 1,108,440.09, 1,529,685.06 and 643,257.95
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Solution
The fourth proportional to 1,108,440.09, 1,529,685.06 and 643,257.95 is: 887,717.86
Step by Step Solution
- Step 1: Write the proportion equation
1,108,440.09 : 1,529,685.06 = 643,257.95 : x - Step 2: Convert to fraction form
1,108,440.09/1,529,685.06 = 643,257.95/x - Step 3: Cross multiply
1,108,440.09x = 1,529,685.06 × 643,257.95 - Step 4: Simplify right side
1,108,440.09x = 983,982,068,192.80 - Step 5: Solve for x
x = 983,982,068,192.80/1,108,440.09 - Step 6: Final answer
x = 887,717.86
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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.