Finding the Fourth Proportional to 989,623.48, 1,364,838.06 and 688,536.76
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Solution
The fourth proportional to 989,623.48, 1,364,838.06 and 688,536.76 is: 949,594.66
Step by Step Solution
- Step 1: Write the proportion equation
989,623.48 : 1,364,838.06 = 688,536.76 : x - Step 2: Convert to fraction form
989,623.48/1,364,838.06 = 688,536.76/x - Step 3: Cross multiply
989,623.48x = 1,364,838.06 × 688,536.76 - Step 4: Simplify right side
989,623.48x = 939,741,175,757.09 - Step 5: Solve for x
x = 939,741,175,757.09/989,623.48 - Step 6: Final answer
x = 949,594.66
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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.