Finding the Fourth Proportional to 1,565,917.69, 2,160,929.66 and 921,379.63
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Solution
The fourth proportional to 1,565,917.69, 2,160,929.66 and 921,379.63 is: 1,271,482.26
Step by Step Solution
- Step 1: Write the proportion equation
1,565,917.69 : 2,160,929.66 = 921,379.63 : x - Step 2: Convert to fraction form
1,565,917.69/2,160,929.66 = 921,379.63/x - Step 3: Cross multiply
1,565,917.69x = 2,160,929.66 × 921,379.63 - Step 4: Simplify right side
1,565,917.69x = 1,991,036,560,577.60 - Step 5: Solve for x
x = 1,991,036,560,577.60/1,565,917.69 - Step 6: Final answer
x = 1,271,482.26
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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.