Finding the Fourth Proportional to 720,433.52, 994,245.36 and 478,337.12
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Solution
The fourth proportional to 720,433.52, 994,245.36 and 478,337.12 is: 660,136.50
Step by Step Solution
- Step 1: Write the proportion equation
720,433.52 : 994,245.36 = 478,337.12 : x - Step 2: Convert to fraction form
720,433.52/994,245.36 = 478,337.12/x - Step 3: Cross multiply
720,433.52x = 994,245.36 × 478,337.12 - Step 4: Simplify right side
720,433.52x = 475,584,462,075.76 - Step 5: Solve for x
x = 475,584,462,075.76/720,433.52 - Step 6: Final answer
x = 660,136.50
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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.