Finding the Fourth Proportional to 1,605,920.18, 2,215,965.60 and 917,636.65
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Solution
The fourth proportional to 1,605,920.18, 2,215,965.60 and 917,636.65 is: 1,266,221.87
Step by Step Solution
- Step 1: Write the proportion equation
1,605,920.18 : 2,215,965.60 = 917,636.65 : x - Step 2: Convert to fraction form
1,605,920.18/2,215,965.60 = 917,636.65/x - Step 3: Cross multiply
1,605,920.18x = 2,215,965.60 × 917,636.65 - Step 4: Simplify right side
1,605,920.18x = 2,033,451,244,159.33 - Step 5: Solve for x
x = 2,033,451,244,159.33/1,605,920.18 - Step 6: Final answer
x = 1,266,221.87
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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.