Finding the Fourth Proportional to 779,938.21, 1,076,336.81 and 440,457.49
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Solution
The fourth proportional to 779,938.21, 1,076,336.81 and 440,457.49 is: 607,843.81
Step by Step Solution
- Step 1: Write the proportion equation
779,938.21 : 1,076,336.81 = 440,457.49 : x - Step 2: Convert to fraction form
779,938.21/1,076,336.81 = 440,457.49/x - Step 3: Cross multiply
779,938.21x = 1,076,336.81 × 440,457.49 - Step 4: Simplify right side
779,938.21x = 474,080,609,727.21 - Step 5: Solve for x
x = 474,080,609,727.21/779,938.21 - Step 6: Final answer
x = 607,843.81
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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.