Finding the Fourth Proportional to 4,920,135.16, 7,379,940.30 and 1,325,844.40
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Solution
The fourth proportional to 4,920,135.16, 7,379,940.30 and 1,325,844.40 is: 1,988,695.88
Step by Step Solution
- Step 1: Write the proportion equation
4,920,135.16 : 7,379,940.30 = 1,325,844.40 : x - Step 2: Convert to fraction form
4,920,135.16/7,379,940.30 = 1,325,844.40/x - Step 3: Cross multiply
4,920,135.16x = 7,379,940.30 × 1,325,844.40 - Step 4: Simplify right side
4,920,135.16x = 9,784,652,519,089.32 - Step 5: Solve for x
x = 9,784,652,519,089.32/4,920,135.16 - Step 6: Final answer
x = 1,988,695.88
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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.