Finding the Fourth Proportional to 863,642.08, 1,293,728.16 and 430,053.26
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Solution
The fourth proportional to 863,642.08, 1,293,728.16 and 430,053.26 is: 644,215.96
Step by Step Solution
- Step 1: Write the proportion equation
863,642.08 : 1,293,728.16 = 430,053.26 : x - Step 2: Convert to fraction form
863,642.08/1,293,728.16 = 430,053.26/x - Step 3: Cross multiply
863,642.08x = 1,293,728.16 × 430,053.26 - Step 4: Simplify right side
863,642.08x = 556,372,012,761.80 - Step 5: Solve for x
x = 556,372,012,761.80/863,642.08 - Step 6: Final answer
x = 644,215.96
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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.