Finding the Fourth Proportional to 778,548.63, 1,074,395.64 and 434,364.09
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Solution
The fourth proportional to 778,548.63, 1,074,395.64 and 434,364.09 is: 599,421.62
Step by Step Solution
- Step 1: Write the proportion equation
778,548.63 : 1,074,395.64 = 434,364.09 : x - Step 2: Convert to fraction form
778,548.63/1,074,395.64 = 434,364.09/x - Step 3: Cross multiply
778,548.63x = 1,074,395.64 × 434,364.09 - Step 4: Simplify right side
778,548.63x = 466,678,884,468.57 - Step 5: Solve for x
x = 466,678,884,468.57/778,548.63 - Step 6: Final answer
x = 599,421.62
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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.