Finding the Fourth Proportional to 4,920,985.20, 7,381,477.80 and 2,759,791.80
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Solution
The fourth proportional to 4,920,985.20, 7,381,477.80 and 2,759,791.80 is: 4,139,687.70
Step by Step Solution
- Step 1: Write the proportion equation
4,920,985.20 : 7,381,477.80 = 2,759,791.80 : x - Step 2: Convert to fraction form
4,920,985.20/7,381,477.80 = 2,759,791.80/x - Step 3: Cross multiply
4,920,985.20x = 7,381,477.80 × 2,759,791.80 - Step 4: Simplify right side
4,920,985.20x = 20,371,341,904,322.04 - Step 5: Solve for x
x = 20,371,341,904,322.04/4,920,985.20 - Step 6: Final answer
x = 4,139,687.70
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1.5x scale
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.