Finding the Fourth Proportional to 885,736,875.91, 1,222,354,022.99 and 509,393,757.49
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Solution
The fourth proportional to 885,736,875.91, 1,222,354,022.99 and 509,393,757.49 is: 702,984,741.51
Step by Step Solution
- Step 1: Write the proportion equation
885,736,875.91 : 1,222,354,022.99 = 509,393,757.49 : x - Step 2: Convert to fraction form
885,736,875.91/1,222,354,022.99 = 509,393,757.49/x - Step 3: Cross multiply
885,736,875.91x = 1,222,354,022.99 × 509,393,757.49 - Step 4: Simplify right side
885,736,875.91x = 622,659,508,753,894,016 - Step 5: Solve for x
x = 622,659,508,753,894,016/885,736,875.91 - Step 6: Final answer
x = 702,984,741.51
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Double scale
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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.