Finding the Fourth Proportional to 919,515.58, 1,378,105.35 and 413,536.12
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Solution
The fourth proportional to 919,515.58, 1,378,105.35 and 413,536.12 is: 619,778.88
Step by Step Solution
- Step 1: Write the proportion equation
919,515.58 : 1,378,105.35 = 413,536.12 : x - Step 2: Convert to fraction form
919,515.58/1,378,105.35 = 413,536.12/x - Step 3: Cross multiply
919,515.58x = 1,378,105.35 × 413,536.12 - Step 4: Simplify right side
919,515.58x = 569,896,339,390.24 - Step 5: Solve for x
x = 569,896,339,390.24/919,515.58 - Step 6: Final answer
x = 619,778.88
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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.