Finding the Fourth Proportional to 1,853,416.40, 2,557,788.36 and 1,138,254.80
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Solution
The fourth proportional to 1,853,416.40, 2,557,788.36 and 1,138,254.80 is: 1,570,836.90
Step by Step Solution
- Step 1: Write the proportion equation
1,853,416.40 : 2,557,788.36 = 1,138,254.80 : x - Step 2: Convert to fraction form
1,853,416.40/2,557,788.36 = 1,138,254.80/x - Step 3: Cross multiply
1,853,416.40x = 2,557,788.36 × 1,138,254.80 - Step 4: Simplify right side
1,853,416.40x = 2,911,414,878,154.13 - Step 5: Solve for x
x = 2,911,414,878,154.13/1,853,416.40 - Step 6: Final answer
x = 1,570,836.90
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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.