Finding the Fourth Proportional to 831,620, 1,247,507.76 and 270,503.84
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Solution
The fourth proportional to 831,620, 1,247,507.76 and 270,503.84 is: 405,781.05
Step by Step Solution
- Step 1: Write the proportion equation
831,620 : 1,247,507.76 = 270,503.84 : x - Step 2: Convert to fraction form
831,620/1,247,507.76 = 270,503.84/x - Step 3: Cross multiply
831,620x = 1,247,507.76 × 270,503.84 - Step 4: Simplify right side
831,620x = 337,455,639,509.80 - Step 5: Solve for x
x = 337,455,639,509.80/831,620 - Step 6: Final answer
x = 405,781.05
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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.