Finding the Fourth Proportional to 648,437,025.78, 894,841,912.62 and 351,079,231.50
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Solution
The fourth proportional to 648,437,025.78, 894,841,912.62 and 351,079,231.50 is: 484,488,698.99
Step by Step Solution
- Step 1: Write the proportion equation
648,437,025.78 : 894,841,912.62 = 351,079,231.50 : x - Step 2: Convert to fraction form
648,437,025.78/894,841,912.62 = 351,079,231.50/x - Step 3: Cross multiply
648,437,025.78x = 894,841,912.62 × 351,079,231.50 - Step 4: Simplify right side
648,437,025.78x = 314,160,410,996,619,776 - Step 5: Solve for x
x = 314,160,410,996,619,776/648,437,025.78 - Step 6: Final answer
x = 484,488,698.99
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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.