Finding the Fourth Proportional to 3,878,564.31, 5,352,415.35 and 2,136,245.50
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Solution
The fourth proportional to 3,878,564.31, 5,352,415.35 and 2,136,245.50 is: 2,948,016.92
Step by Step Solution
- Step 1: Write the proportion equation
3,878,564.31 : 5,352,415.35 = 2,136,245.50 : x - Step 2: Convert to fraction form
3,878,564.31/5,352,415.35 = 2,136,245.50/x - Step 3: Cross multiply
3,878,564.31x = 5,352,415.35 × 2,136,245.50 - Step 4: Simplify right side
3,878,564.31x = 11,434,073,216,264.40 - Step 5: Solve for x
x = 11,434,073,216,264.40/3,878,564.31 - Step 6: Final answer
x = 2,948,016.92
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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.