Finding the Fourth Proportional to 643,070.03, 887,423.49 and 356,583.96
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Solution
The fourth proportional to 643,070.03, 887,423.49 and 356,583.96 is: 492,078.58
Step by Step Solution
- Step 1: Write the proportion equation
643,070.03 : 887,423.49 = 356,583.96 : x - Step 2: Convert to fraction form
643,070.03/887,423.49 = 356,583.96/x - Step 3: Cross multiply
643,070.03x = 887,423.49 × 356,583.96 - Step 4: Simplify right side
643,070.03x = 316,440,982,261.22 - Step 5: Solve for x
x = 316,440,982,261.22/643,070.03 - Step 6: Final answer
x = 492,078.58
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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.