Finding the Fourth Proportional to 620,639,462.21, 931,186,197.69 and 288,804,733.26
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Solution
The fourth proportional to 620,639,462.21, 931,186,197.69 and 288,804,733.26 is: 433,312,732.78
Step by Step Solution
- Step 1: Write the proportion equation
620,639,462.21 : 931,186,197.69 = 288,804,733.26 : x - Step 2: Convert to fraction form
620,639,462.21/931,186,197.69 = 288,804,733.26/x - Step 3: Cross multiply
620,639,462.21x = 931,186,197.69 × 288,804,733.26 - Step 4: Simplify right side
620,639,462.21x = 268,930,981,439,254,080 - Step 5: Solve for x
x = 268,930,981,439,254,080/620,639,462.21 - Step 6: Final answer
x = 433,312,732.78
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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.