Finding the Fourth Proportional to 698,654.30, 1,048,240.96 and 485,309.82
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Solution
The fourth proportional to 698,654.30, 1,048,240.96 and 485,309.82 is: 728,144.99
Step by Step Solution
- Step 1: Write the proportion equation
698,654.30 : 1,048,240.96 = 485,309.82 : x - Step 2: Convert to fraction form
698,654.30/1,048,240.96 = 485,309.82/x - Step 3: Cross multiply
698,654.30x = 1,048,240.96 × 485,309.82 - Step 4: Simplify right side
698,654.30x = 508,721,631,614.23 - Step 5: Solve for x
x = 508,721,631,614.23/698,654.30 - Step 6: Final answer
x = 728,144.99
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.