Finding the Fourth Proportional to 623,236.95, 861,519.92 and 555,921.09
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Solution
The fourth proportional to 623,236.95, 861,519.92 and 555,921.09 is: 768,467.10
Step by Step Solution
- Step 1: Write the proportion equation
623,236.95 : 861,519.92 = 555,921.09 : x - Step 2: Convert to fraction form
623,236.95/861,519.92 = 555,921.09/x - Step 3: Cross multiply
623,236.95x = 861,519.92 × 555,921.09 - Step 4: Simplify right side
623,236.95x = 478,937,090,203.51 - Step 5: Solve for x
x = 478,937,090,203.51/623,236.95 - Step 6: Final answer
x = 768,467.10
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1.5x scale
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.