Finding the Fourth Proportional to 416,831,509.73, 624,458,063.68 and 278,239,220.21
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Solution
The fourth proportional to 416,831,509.73, 624,458,063.68 and 278,239,220.21 is: 416,832,030.78
Step by Step Solution
- Step 1: Write the proportion equation
416,831,509.73 : 624,458,063.68 = 278,239,220.21 : x - Step 2: Convert to fraction form
416,831,509.73/624,458,063.68 = 278,239,220.21/x - Step 3: Cross multiply
416,831,509.73x = 624,458,063.68 × 278,239,220.21 - Step 4: Simplify right side
416,831,509.73x = 173,748,724,693,035,264 - Step 5: Solve for x
x = 173,748,724,693,035,264/416,831,509.73 - Step 6: Final answer
x = 416,832,030.78
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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.