Finding the Fourth Proportional to 1,580,138.28, 2,180,584.80 and 854,987.40
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Solution
The fourth proportional to 1,580,138.28, 2,180,584.80 and 854,987.40 is: 1,179,879.35
Step by Step Solution
- Step 1: Write the proportion equation
1,580,138.28 : 2,180,584.80 = 854,987.40 : x - Step 2: Convert to fraction form
1,580,138.28/2,180,584.80 = 854,987.40/x - Step 3: Cross multiply
1,580,138.28x = 2,180,584.80 × 854,987.40 - Step 4: Simplify right side
1,580,138.28x = 1,864,372,528,631.52 - Step 5: Solve for x
x = 1,864,372,528,631.52/1,580,138.28 - Step 6: Final answer
x = 1,179,879.35
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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.