Finding the Fourth Proportional to 3,643,432.86, 5,028,380.66 and 2,115,539.98
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Solution
The fourth proportional to 3,643,432.86, 5,028,380.66 and 2,115,539.98 is: 2,919,702.58
Step by Step Solution
- Step 1: Write the proportion equation
3,643,432.86 : 5,028,380.66 = 2,115,539.98 : x - Step 2: Convert to fraction form
3,643,432.86/5,028,380.66 = 2,115,539.98/x - Step 3: Cross multiply
3,643,432.86x = 5,028,380.66 × 2,115,539.98 - Step 4: Simplify right side
3,643,432.86x = 10,637,740,320,888.79 - Step 5: Solve for x
x = 10,637,740,320,888.79/3,643,432.86 - Step 6: Final answer
x = 2,919,702.58
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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.