Finding the Fourth Proportional to 878,242,891.59, 1,317,234,755.34 and 256,291,128.99
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Solution
The fourth proportional to 878,242,891.59, 1,317,234,755.34 and 256,291,128.99 is: 384,398,878.51
Step by Step Solution
- Step 1: Write the proportion equation
878,242,891.59 : 1,317,234,755.34 = 256,291,128.99 : x - Step 2: Convert to fraction form
878,242,891.59/1,317,234,755.34 = 256,291,128.99/x - Step 3: Cross multiply
878,242,891.59x = 1,317,234,755.34 × 256,291,128.99 - Step 4: Simplify right side
878,242,891.59x = 337,595,582,590,955,008 - Step 5: Solve for x
x = 337,595,582,590,955,008/878,242,891.59 - Step 6: Final answer
x = 384,398,878.51
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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.