Finding the Fourth Proportional to 678,811.77, 1,018,201.87 and 341,761.93
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Solution
The fourth proportional to 678,811.77, 1,018,201.87 and 341,761.93 is: 512,634.95
Step by Step Solution
- Step 1: Write the proportion equation
678,811.77 : 1,018,201.87 = 341,761.93 : x - Step 2: Convert to fraction form
678,811.77/1,018,201.87 = 341,761.93/x - Step 3: Cross multiply
678,811.77x = 1,018,201.87 × 341,761.93 - Step 4: Simplify right side
678,811.77x = 347,982,636,220.81 - Step 5: Solve for x
x = 347,982,636,220.81/678,811.77 - Step 6: Final answer
x = 512,634.95
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.