Finding the Fourth Proportional to 1,312,786,600.09, 1,811,650,966.36 and 709,957,223.17
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Solution
The fourth proportional to 1,312,786,600.09, 1,811,650,966.36 and 709,957,223.17 is: 979,743,919.80
Step by Step Solution
- Step 1: Write the proportion equation
1,312,786,600.09 : 1,811,650,966.36 = 709,957,223.17 : x - Step 2: Convert to fraction form
1,312,786,600.09/1,811,650,966.36 = 709,957,223.17/x - Step 3: Cross multiply
1,312,786,600.09x = 1,811,650,966.36 × 709,957,223.17 - Step 4: Simplify right side
1,312,786,600.09x = 1,286,194,689,438,100,224 - Step 5: Solve for x
x = 1,286,194,689,438,100,224/1,312,786,600.09 - Step 6: Final answer
x = 979,743,919.80
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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.