Finding the Fourth Proportional to 1,620,330.72, 2,235,988.30 and 931,950.60
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Solution
The fourth proportional to 1,620,330.72, 2,235,988.30 and 931,950.60 is: 1,286,052.66
Step by Step Solution
- Step 1: Write the proportion equation
1,620,330.72 : 2,235,988.30 = 931,950.60 : x - Step 2: Convert to fraction form
1,620,330.72/2,235,988.30 = 931,950.60/x - Step 3: Cross multiply
1,620,330.72x = 2,235,988.30 × 931,950.60 - Step 4: Simplify right side
1,620,330.72x = 2,083,830,637,777.98 - Step 5: Solve for x
x = 2,083,830,637,777.98/1,620,330.72 - Step 6: Final answer
x = 1,286,052.66
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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.