Finding the Fourth Proportional to 619,709,286.20, 855,133,798.08 and 351,699,771.80
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Solution
The fourth proportional to 619,709,286.20, 855,133,798.08 and 351,699,771.80 is: 485,308,786.46
Step by Step Solution
- Step 1: Write the proportion equation
619,709,286.20 : 855,133,798.08 = 351,699,771.80 : x - Step 2: Convert to fraction form
619,709,286.20/855,133,798.08 = 351,699,771.80/x - Step 3: Cross multiply
619,709,286.20x = 855,133,798.08 × 351,699,771.80 - Step 4: Simplify right side
619,709,286.20x = 300,750,361,643,203,328 - Step 5: Solve for x
x = 300,750,361,643,203,328/619,709,286.20 - Step 6: Final answer
x = 485,308,786.46
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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.