Finding the Fourth Proportional to 391,631,216.58, 541,226,186.36 and 320,955,376.14
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Solution
The fourth proportional to 391,631,216.58, 541,226,186.36 and 320,955,376.14 is: 443,553,646.56
Step by Step Solution
- Step 1: Write the proportion equation
391,631,216.58 : 541,226,186.36 = 320,955,376.14 : x - Step 2: Convert to fraction form
391,631,216.58/541,226,186.36 = 320,955,376.14/x - Step 3: Cross multiply
391,631,216.58x = 541,226,186.36 × 320,955,376.14 - Step 4: Simplify right side
391,631,216.58x = 173,709,454,219,991,520 - Step 5: Solve for x
x = 173,709,454,219,991,520/391,631,216.58 - Step 6: Final answer
x = 443,553,646.56
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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.