Finding the Fourth Proportional to 6,418,931.12, 8,859,033.12 and 3,972,330.17
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Solution
The fourth proportional to 6,418,931.12, 8,859,033.12 and 3,972,330.17 is: 5,482,377.65
Step by Step Solution
- Step 1: Write the proportion equation
6,418,931.12 : 8,859,033.12 = 3,972,330.17 : x - Step 2: Convert to fraction form
6,418,931.12/8,859,033.12 = 3,972,330.17/x - Step 3: Cross multiply
6,418,931.12x = 8,859,033.12 × 3,972,330.17 - Step 4: Simplify right side
6,418,931.12x = 35,191,004,495,310.06 - Step 5: Solve for x
x = 35,191,004,495,310.06/6,418,931.12 - Step 6: Final answer
x = 5,482,377.65
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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.