Finding the Fourth Proportional to 4,998,138.78, 7,497,208.09 and 1,211,621.66
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Solution
The fourth proportional to 4,998,138.78, 7,497,208.09 and 1,211,621.66 is: 1,817,432.47
Step by Step Solution
- Step 1: Write the proportion equation
4,998,138.78 : 7,497,208.09 = 1,211,621.66 : x - Step 2: Convert to fraction form
4,998,138.78/7,497,208.09 = 1,211,621.66/x - Step 3: Cross multiply
4,998,138.78x = 7,497,208.09 × 1,211,621.66 - Step 4: Simplify right side
4,998,138.78x = 9,083,779,711,371.23 - Step 5: Solve for x
x = 9,083,779,711,371.23/4,998,138.78 - Step 6: Final answer
x = 1,817,432.47
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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.