Finding the Fourth Proportional to 808,813.40, 1,213,997.70 and 409,904.60
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Solution
The fourth proportional to 808,813.40, 1,213,997.70 and 409,904.60 is: 615,250.99
Step by Step Solution
- Step 1: Write the proportion equation
808,813.40 : 1,213,997.70 = 409,904.60 : x - Step 2: Convert to fraction form
808,813.40/1,213,997.70 = 409,904.60/x - Step 3: Cross multiply
808,813.40x = 1,213,997.70 × 409,904.60 - Step 4: Simplify right side
808,813.40x = 497,623,241,619.42 - Step 5: Solve for x
x = 497,623,241,619.42/808,813.40 - Step 6: Final answer
x = 615,250.99
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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.