Finding the Fourth Proportional to 721,811.16, 996,122.88 and 415,863.50
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Solution
The fourth proportional to 721,811.16, 996,122.88 and 415,863.50 is: 573,905.15
Step by Step Solution
- Step 1: Write the proportion equation
721,811.16 : 996,122.88 = 415,863.50 : x - Step 2: Convert to fraction form
721,811.16/996,122.88 = 415,863.50/x - Step 3: Cross multiply
721,811.16x = 996,122.88 × 415,863.50 - Step 4: Simplify right side
721,811.16x = 414,251,142,326.27 - Step 5: Solve for x
x = 414,251,142,326.27/721,811.16 - Step 6: Final answer
x = 573,905.15
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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.