Finding the Fourth Proportional to 1,041,806,263.20, 1,437,639,846.12 and 618,438,021.18
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Solution
The fourth proportional to 1,041,806,263.20, 1,437,639,846.12 and 618,438,021.18 is: 853,413,127.77
Step by Step Solution
- Step 1: Write the proportion equation
1,041,806,263.20 : 1,437,639,846.12 = 618,438,021.18 : x - Step 2: Convert to fraction form
1,041,806,263.20/1,437,639,846.12 = 618,438,021.18/x - Step 3: Cross multiply
1,041,806,263.20x = 1,437,639,846.12 × 618,438,021.18 - Step 4: Simplify right side
1,041,806,263.20x = 889,091,141,603,972,352 - Step 5: Solve for x
x = 889,091,141,603,972,352/1,041,806,263.20 - Step 6: Final answer
x = 853,413,127.77
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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.