Finding the Fourth Proportional to 691,724,419.60, 954,578,580.60 and 378,459,896.08
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Solution
The fourth proportional to 691,724,419.60, 954,578,580.60 and 378,459,896.08 is: 522,274,044.66
Step by Step Solution
- Step 1: Write the proportion equation
691,724,419.60 : 954,578,580.60 = 378,459,896.08 : x - Step 2: Convert to fraction form
691,724,419.60/954,578,580.60 = 378,459,896.08/x - Step 3: Cross multiply
691,724,419.60x = 954,578,580.60 × 378,459,896.08 - Step 4: Simplify right side
691,724,419.60x = 361,269,710,414,069,888 - Step 5: Solve for x
x = 361,269,710,414,069,888/691,724,419.60 - Step 6: Final answer
x = 522,274,044.66
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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.