Finding the Fourth Proportional to 612,204.80, 916,492.80 and 455,129.60
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Solution
The fourth proportional to 612,204.80, 916,492.80 and 455,129.60 is: 681,345.53
Step by Step Solution
- Step 1: Write the proportion equation
612,204.80 : 916,492.80 = 455,129.60 : x - Step 2: Convert to fraction form
612,204.80/916,492.80 = 455,129.60/x - Step 3: Cross multiply
612,204.80x = 916,492.80 × 455,129.60 - Step 4: Simplify right side
612,204.80x = 417,123,001,466.88 - Step 5: Solve for x
x = 417,123,001,466.88/612,204.80 - Step 6: Final answer
x = 681,345.53
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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.