Finding the Fourth Proportional to 562,837,787.28, 776,716,221.42 and 311,958,358.80
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Solution
The fourth proportional to 562,837,787.28, 776,716,221.42 and 311,958,358.80 is: 430,502,576.70
Step by Step Solution
- Step 1: Write the proportion equation
562,837,787.28 : 776,716,221.42 = 311,958,358.80 : x - Step 2: Convert to fraction form
562,837,787.28/776,716,221.42 = 311,958,358.80/x - Step 3: Cross multiply
562,837,787.28x = 776,716,221.42 × 311,958,358.80 - Step 4: Simplify right side
562,837,787.28x = 242,303,117,687,520,608 - Step 5: Solve for x
x = 242,303,117,687,520,608/562,837,787.28 - Step 6: Final answer
x = 430,502,576.70
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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.