Finding the Fourth Proportional to 6,319,121.54, 8,720,368.45 and 3,418,511.65
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Solution
The fourth proportional to 6,319,121.54, 8,720,368.45 and 3,418,511.65 is: 4,717,535.65
Step by Step Solution
- Step 1: Write the proportion equation
6,319,121.54 : 8,720,368.45 = 3,418,511.65 : x - Step 2: Convert to fraction form
6,319,121.54/8,720,368.45 = 3,418,511.65/x - Step 3: Cross multiply
6,319,121.54x = 8,720,368.45 × 3,418,511.65 - Step 4: Simplify right side
6,319,121.54x = 29,810,681,108,270.24 - Step 5: Solve for x
x = 29,810,681,108,270.24/6,319,121.54 - Step 6: Final answer
x = 4,717,535.65
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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.