Finding the Fourth Proportional to 3,989,089.70, 5,974,777.20 and 3,280,501.70
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Solution
The fourth proportional to 3,989,089.70, 5,974,777.20 and 3,280,501.70 is: 4,913,468.54
Step by Step Solution
- Step 1: Write the proportion equation
3,989,089.70 : 5,974,777.20 = 3,280,501.70 : x - Step 2: Convert to fraction form
3,989,089.70/5,974,777.20 = 3,280,501.70/x - Step 3: Cross multiply
3,989,089.70x = 5,974,777.20 × 3,280,501.70 - Step 4: Simplify right side
3,989,089.70x = 19,600,266,761,721.24 - Step 5: Solve for x
x = 19,600,266,761,721.24/3,989,089.70 - Step 6: Final answer
x = 4,913,468.54
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.