Finding the Fourth Proportional to 7,151,605.79, 9,869,146.61 and 3,888,420.49
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Solution
The fourth proportional to 7,151,605.79, 9,869,146.61 and 3,888,420.49 is: 5,365,982.55
Step by Step Solution
- Step 1: Write the proportion equation
7,151,605.79 : 9,869,146.61 = 3,888,420.49 : x - Step 2: Convert to fraction form
7,151,605.79/9,869,146.61 = 3,888,420.49/x - Step 3: Cross multiply
7,151,605.79x = 9,869,146.61 × 3,888,420.49 - Step 4: Simplify right side
7,151,605.79x = 38,375,391,862,744.12 - Step 5: Solve for x
x = 38,375,391,862,744.12/7,151,605.79 - Step 6: Final answer
x = 5,365,982.55
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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.