Finding the Fourth Proportional to 643,160.28, 887,615.74 and 356,772.63
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Solution
The fourth proportional to 643,160.28, 887,615.74 and 356,772.63 is: 492,376.49
Step by Step Solution
- Step 1: Write the proportion equation
643,160.28 : 887,615.74 = 356,772.63 : x - Step 2: Convert to fraction form
643,160.28/887,615.74 = 356,772.63/x - Step 3: Cross multiply
643,160.28x = 887,615.74 × 356,772.63 - Step 4: Simplify right side
643,160.28x = 316,677,001,989.20 - Step 5: Solve for x
x = 316,677,001,989.20/643,160.28 - Step 6: Final answer
x = 492,376.49
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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.