Finding the Fourth Proportional to 1,557,813.76, 2,149,539.84 and 878,732.80
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Solution
The fourth proportional to 1,557,813.76, 2,149,539.84 and 878,732.80 is: 1,212,514.11
Step by Step Solution
- Step 1: Write the proportion equation
1,557,813.76 : 2,149,539.84 = 878,732.80 : x - Step 2: Convert to fraction form
1,557,813.76/2,149,539.84 = 878,732.80/x - Step 3: Cross multiply
1,557,813.76x = 2,149,539.84 × 878,732.80 - Step 4: Simplify right side
1,557,813.76x = 1,888,871,162,314.75 - Step 5: Solve for x
x = 1,888,871,162,314.75/1,557,813.76 - Step 6: Final answer
x = 1,212,514.11
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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.