Finding the Fourth Proportional to 991,491.88, 1,486,972.14 and 430,393
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Solution
The fourth proportional to 991,491.88, 1,486,972.14 and 430,393 is: 645,474.17
Step by Step Solution
- Step 1: Write the proportion equation
991,491.88 : 1,486,972.14 = 430,393 : x - Step 2: Convert to fraction form
991,491.88/1,486,972.14 = 430,393/x - Step 3: Cross multiply
991,491.88x = 1,486,972.14 × 430,393 - Step 4: Simplify right side
991,491.88x = 639,982,400,251.02 - Step 5: Solve for x
x = 639,982,400,251.02/991,491.88 - Step 6: Final answer
x = 645,474.17
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.