Finding the Fourth Proportional to 819,007.80, 1,228,511.70 and 765,863.70
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Solution
The fourth proportional to 819,007.80, 1,228,511.70 and 765,863.70 is: 1,148,795.55
Step by Step Solution
- Step 1: Write the proportion equation
819,007.80 : 1,228,511.70 = 765,863.70 : x - Step 2: Convert to fraction form
819,007.80/1,228,511.70 = 765,863.70/x - Step 3: Cross multiply
819,007.80x = 1,228,511.70 × 765,863.70 - Step 4: Simplify right side
819,007.80x = 940,872,516,055.29 - Step 5: Solve for x
x = 940,872,516,055.29/819,007.80 - Step 6: Final answer
x = 1,148,795.55
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.