Finding the Fourth Proportional to 683,458.79, 943,201.76 and 393,070.55
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Solution
The fourth proportional to 683,458.79, 943,201.76 and 393,070.55 is: 542,453.82
Step by Step Solution
- Step 1: Write the proportion equation
683,458.79 : 943,201.76 = 393,070.55 : x - Step 2: Convert to fraction form
683,458.79/943,201.76 = 393,070.55/x - Step 3: Cross multiply
683,458.79x = 943,201.76 × 393,070.55 - Step 4: Simplify right side
683,458.79x = 370,744,831,714.83 - Step 5: Solve for x
x = 370,744,831,714.83/683,458.79 - Step 6: Final answer
x = 542,453.82
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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.