Finding the Fourth Proportional to 553,640.67, 764,026.74 and 311,926.95
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Solution
The fourth proportional to 553,640.67, 764,026.74 and 311,926.95 is: 430,460.66
Step by Step Solution
- Step 1: Write the proportion equation
553,640.67 : 764,026.74 = 311,926.95 : x - Step 2: Convert to fraction form
553,640.67/764,026.74 = 311,926.95/x - Step 3: Cross multiply
553,640.67x = 764,026.74 × 311,926.95 - Step 4: Simplify right side
553,640.67x = 238,320,530,726.64 - Step 5: Solve for x
x = 238,320,530,726.64/553,640.67 - Step 6: Final answer
x = 430,460.66
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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.