Finding the Fourth Proportional to 515,402,276.70, 711,249,163.13 and 280,448,889.09
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Solution
The fourth proportional to 515,402,276.70, 711,249,163.13 and 280,448,889.09 is: 387,016,213.71
Step by Step Solution
- Step 1: Write the proportion equation
515,402,276.70 : 711,249,163.13 = 280,448,889.09 : x - Step 2: Convert to fraction form
515,402,276.70/711,249,163.13 = 280,448,889.09/x - Step 3: Cross multiply
515,402,276.70x = 711,249,163.13 × 280,448,889.09 - Step 4: Simplify right side
515,402,276.70x = 199,469,037,664,858,144 - Step 5: Solve for x
x = 199,469,037,664,858,144/515,402,276.70 - Step 6: Final answer
x = 387,016,213.71
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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.