Finding the Fourth Proportional to 698,748.91, 964,307.70 and 392,921.56
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Solution
The fourth proportional to 698,748.91, 964,307.70 and 392,921.56 is: 542,250.99
Step by Step Solution
- Step 1: Write the proportion equation
698,748.91 : 964,307.70 = 392,921.56 : x - Step 2: Convert to fraction form
698,748.91/964,307.70 = 392,921.56/x - Step 3: Cross multiply
698,748.91x = 964,307.70 × 392,921.56 - Step 4: Simplify right side
698,748.91x = 378,897,287,009.40 - Step 5: Solve for x
x = 378,897,287,009.40/698,748.91 - Step 6: Final answer
x = 542,250.99
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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.