Finding the Fourth Proportional to 657,778.68, 907,736.76 and 355,972.68
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Solution
The fourth proportional to 657,778.68, 907,736.76 and 355,972.68 is: 491,243.48
Step by Step Solution
- Step 1: Write the proportion equation
657,778.68 : 907,736.76 = 355,972.68 : x - Step 2: Convert to fraction form
657,778.68/907,736.76 = 355,972.68/x - Step 3: Cross multiply
657,778.68x = 907,736.76 × 355,972.68 - Step 4: Simplify right side
657,778.68x = 323,129,487,191.72 - Step 5: Solve for x
x = 323,129,487,191.72/657,778.68 - Step 6: Final answer
x = 491,243.48
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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.