Finding the Fourth Proportional to 765,331.84, 1,055,804.56 and 493,487.05
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Solution
The fourth proportional to 765,331.84, 1,055,804.56 and 493,487.05 is: 680,784.28
Step by Step Solution
- Step 1: Write the proportion equation
765,331.84 : 1,055,804.56 = 493,487.05 : x - Step 2: Convert to fraction form
765,331.84/1,055,804.56 = 493,487.05/x - Step 3: Cross multiply
765,331.84x = 1,055,804.56 × 493,487.05 - Step 4: Simplify right side
765,331.84x = 521,025,880,681.91 - Step 5: Solve for x
x = 521,025,880,681.91/765,331.84 - Step 6: Final answer
x = 680,784.28
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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.