Finding the Fourth Proportional to 1,329,803.39, 1,994,985.35 and 431,175.08
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Solution
The fourth proportional to 1,329,803.39, 1,994,985.35 and 431,175.08 is: 646,853.50
Step by Step Solution
- Step 1: Write the proportion equation
1,329,803.39 : 1,994,985.35 = 431,175.08 : x - Step 2: Convert to fraction form
1,329,803.39/1,994,985.35 = 431,175.08/x - Step 3: Cross multiply
1,329,803.39x = 1,994,985.35 × 431,175.08 - Step 4: Simplify right side
1,329,803.39x = 860,187,972,333.57 - Step 5: Solve for x
x = 860,187,972,333.57/1,329,803.39 - Step 6: Final answer
x = 646,853.50
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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.