Finding the Fourth Proportional to 939,459.18, 1,296,789.96 and 557,485.98
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Solution
The fourth proportional to 939,459.18, 1,296,789.96 and 557,485.98 is: 769,530.21
Step by Step Solution
- Step 1: Write the proportion equation
939,459.18 : 1,296,789.96 = 557,485.98 : x - Step 2: Convert to fraction form
939,459.18/1,296,789.96 = 557,485.98/x - Step 3: Cross multiply
939,459.18x = 1,296,789.96 × 557,485.98 - Step 4: Simplify right side
939,459.18x = 722,942,221,704.76 - Step 5: Solve for x
x = 722,942,221,704.76/939,459.18 - Step 6: Final answer
x = 769,530.21
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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.