Finding the Fourth Proportional to 765,812.45, 1,056,803.68 and 479,490.41
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Solution
The fourth proportional to 765,812.45, 1,056,803.68 and 479,490.41 is: 661,685.81
Step by Step Solution
- Step 1: Write the proportion equation
765,812.45 : 1,056,803.68 = 479,490.41 : x - Step 2: Convert to fraction form
765,812.45/1,056,803.68 = 479,490.41/x - Step 3: Cross multiply
765,812.45x = 1,056,803.68 × 479,490.41 - Step 4: Simplify right side
765,812.45x = 506,727,229,812.71 - Step 5: Solve for x
x = 506,727,229,812.71/765,812.45 - Step 6: Final answer
x = 661,685.81
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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.