Finding the Fourth Proportional to 643,276.74, 887,828.19 and 356,889.09
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Solution
The fourth proportional to 643,276.74, 887,828.19 and 356,889.09 is: 492,565.91
Step by Step Solution
- Step 1: Write the proportion equation
643,276.74 : 887,828.19 = 356,889.09 : x - Step 2: Convert to fraction form
643,276.74/887,828.19 = 356,889.09/x - Step 3: Cross multiply
643,276.74x = 887,828.19 × 356,889.09 - Step 4: Simplify right side
643,276.74x = 316,856,194,805.45 - Step 5: Solve for x
x = 316,856,194,805.45/643,276.74 - Step 6: Final answer
x = 492,565.91
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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.