Finding the Fourth Proportional to 661,307.73, 911,748.08 and 428,320.14
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Solution
The fourth proportional to 661,307.73, 911,748.08 and 428,320.14 is: 590,526.99
Step by Step Solution
- Step 1: Write the proportion equation
661,307.73 : 911,748.08 = 428,320.14 : x - Step 2: Convert to fraction form
661,307.73/911,748.08 = 428,320.14/x - Step 3: Cross multiply
661,307.73x = 911,748.08 × 428,320.14 - Step 4: Simplify right side
661,307.73x = 390,520,065,270.33 - Step 5: Solve for x
x = 390,520,065,270.33/661,307.73 - Step 6: Final answer
x = 590,526.99
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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.