Finding the Fourth Proportional to 1,686,128.73, 2,326,799.91 and 961,209.90
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Solution
The fourth proportional to 1,686,128.73, 2,326,799.91 and 961,209.90 is: 1,326,436.75
Step by Step Solution
- Step 1: Write the proportion equation
1,686,128.73 : 2,326,799.91 = 961,209.90 : x - Step 2: Convert to fraction form
1,686,128.73/2,326,799.91 = 961,209.90/x - Step 3: Cross multiply
1,686,128.73x = 2,326,799.91 × 961,209.90 - Step 4: Simplify right side
1,686,128.73x = 2,236,543,108,811.11 - Step 5: Solve for x
x = 2,236,543,108,811.11/1,686,128.73 - Step 6: Final answer
x = 1,326,436.75
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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.