Finding the Fourth Proportional to 989,473.55, 1,365,476.12 and 536,764.55
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Solution
The fourth proportional to 989,473.55, 1,365,476.12 and 536,764.55 is: 740,736.50
Step by Step Solution
- Step 1: Write the proportion equation
989,473.55 : 1,365,476.12 = 536,764.55 : x - Step 2: Convert to fraction form
989,473.55/1,365,476.12 = 536,764.55/x - Step 3: Cross multiply
989,473.55x = 1,365,476.12 × 536,764.55 - Step 4: Simplify right side
989,473.55x = 732,939,179,843.15 - Step 5: Solve for x
x = 732,939,179,843.15/989,473.55 - Step 6: Final answer
x = 740,736.50
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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.