Finding the Fourth Proportional to 747,637.20, 1,121,455.80 and 349,056.45
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Solution
The fourth proportional to 747,637.20, 1,121,455.80 and 349,056.45 is: 523,584.68
Step by Step Solution
- Step 1: Write the proportion equation
747,637.20 : 1,121,455.80 = 349,056.45 : x - Step 2: Convert to fraction form
747,637.20/1,121,455.80 = 349,056.45/x - Step 3: Cross multiply
747,637.20x = 1,121,455.80 × 349,056.45 - Step 4: Simplify right side
747,637.20x = 391,451,380,379.91 - Step 5: Solve for x
x = 391,451,380,379.91/747,637.20 - Step 6: Final answer
x = 523,584.68
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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.