Finding the Fourth Proportional to 2,115,170.40, 2,918,985.92 and 1,148,341.44
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Solution
The fourth proportional to 2,115,170.40, 2,918,985.92 and 1,148,341.44 is: 1,584,738.75
Step by Step Solution
- Step 1: Write the proportion equation
2,115,170.40 : 2,918,985.92 = 1,148,341.44 : x - Step 2: Convert to fraction form
2,115,170.40/2,918,985.92 = 1,148,341.44/x - Step 3: Cross multiply
2,115,170.40x = 2,918,985.92 × 1,148,341.44 - Step 4: Simplify right side
2,115,170.40x = 3,351,992,494,712.52 - Step 5: Solve for x
x = 3,351,992,494,712.52/2,115,170.40 - Step 6: Final answer
x = 1,584,738.75
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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.