Finding the Fourth Proportional to 625,478,221.39, 863,157,576.79 and 343,225,384.64
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Solution
The fourth proportional to 625,478,221.39, 863,157,576.79 and 343,225,384.64 is: 473,649,730.99
Step by Step Solution
- Step 1: Write the proportion equation
625,478,221.39 : 863,157,576.79 = 343,225,384.64 : x - Step 2: Convert to fraction form
625,478,221.39/863,157,576.79 = 343,225,384.64/x - Step 3: Cross multiply
625,478,221.39x = 863,157,576.79 × 343,225,384.64 - Step 4: Simplify right side
625,478,221.39x = 296,257,591,298,678,080 - Step 5: Solve for x
x = 296,257,591,298,678,080/625,478,221.39 - Step 6: Final answer
x = 473,649,730.99
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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.