Finding the Fourth Proportional to 642,342.60, 886,431.06 and 355,862.88
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Solution
The fourth proportional to 642,342.60, 886,431.06 and 355,862.88 is: 491,089.82
Step by Step Solution
- Step 1: Write the proportion equation
642,342.60 : 886,431.06 = 355,862.88 : x - Step 2: Convert to fraction form
642,342.60/886,431.06 = 355,862.88/x - Step 3: Cross multiply
642,342.60x = 886,431.06 × 355,862.88 - Step 4: Simplify right side
642,342.60x = 315,447,909,933.05 - Step 5: Solve for x
x = 315,447,909,933.05/642,342.60 - Step 6: Final answer
x = 491,089.82
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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.