Finding the Fourth Proportional to 644,118.61, 888,993.02 and 372,344.05
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Solution
The fourth proportional to 644,118.61, 888,993.02 and 372,344.05 is: 513,897.99
Step by Step Solution
- Step 1: Write the proportion equation
644,118.61 : 888,993.02 = 372,344.05 : x - Step 2: Convert to fraction form
644,118.61/888,993.02 = 372,344.05/x - Step 3: Cross multiply
644,118.61x = 888,993.02 × 372,344.05 - Step 4: Simplify right side
644,118.61x = 331,011,259,626.81 - Step 5: Solve for x
x = 331,011,259,626.81/644,118.61 - Step 6: Final answer
x = 513,897.99
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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.