Finding the Fourth Proportional to 642,763.68, 887,056.56 and 356,295.84
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Solution
The fourth proportional to 642,763.68, 887,056.56 and 356,295.84 is: 491,711.92
Step by Step Solution
- Step 1: Write the proportion equation
642,763.68 : 887,056.56 = 356,295.84 : x - Step 2: Convert to fraction form
642,763.68/887,056.56 = 356,295.84/x - Step 3: Cross multiply
642,763.68x = 887,056.56 × 356,295.84 - Step 4: Simplify right side
642,763.68x = 316,054,562,172.71 - Step 5: Solve for x
x = 316,054,562,172.71/642,763.68 - Step 6: Final answer
x = 491,711.92
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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.