Finding the Fourth Proportional to 644,727.51, 889,671.87 and 372,812.99
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Solution
The fourth proportional to 644,727.51, 889,671.87 and 372,812.99 is: 514,451.80
Step by Step Solution
- Step 1: Write the proportion equation
644,727.51 : 889,671.87 = 372,812.99 : x - Step 2: Convert to fraction form
644,727.51/889,671.87 = 372,812.99/x - Step 3: Cross multiply
644,727.51x = 889,671.87 × 372,812.99 - Step 4: Simplify right side
644,727.51x = 331,681,225,525.23 - Step 5: Solve for x
x = 331,681,225,525.23/644,727.51 - Step 6: Final answer
x = 514,451.80
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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.