Finding the Fourth Proportional to 2,290,985.90, 3,436,478.85 and 1,279,069.10
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Solution
The fourth proportional to 2,290,985.90, 3,436,478.85 and 1,279,069.10 is: 1,918,603.65
Step by Step Solution
- Step 1: Write the proportion equation
2,290,985.90 : 3,436,478.85 = 1,279,069.10 : x - Step 2: Convert to fraction form
2,290,985.90/3,436,478.85 = 1,279,069.10/x - Step 3: Cross multiply
2,290,985.90x = 3,436,478.85 × 1,279,069.10 - Step 4: Simplify right side
2,290,985.90x = 4,395,493,909,838.54 - Step 5: Solve for x
x = 4,395,493,909,838.54/2,290,985.90 - Step 6: Final answer
x = 1,918,603.65
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.