Finding the Fourth Proportional to 7,518,868.68, 10,376,047.20 and 4,081,108.80
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Solution
The fourth proportional to 7,518,868.68, 10,376,047.20 and 4,081,108.80 is: 5,631,934.72
Step by Step Solution
- Step 1: Write the proportion equation
7,518,868.68 : 10,376,047.20 = 4,081,108.80 : x - Step 2: Convert to fraction form
7,518,868.68/10,376,047.20 = 4,081,108.80/x - Step 3: Cross multiply
7,518,868.68x = 10,376,047.20 × 4,081,108.80 - Step 4: Simplify right side
7,518,868.68x = 42,345,777,537,135.35 - Step 5: Solve for x
x = 42,345,777,537,135.35/7,518,868.68 - Step 6: Final answer
x = 5,631,934.72
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1.5x scale
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.