Finding the Fourth Proportional to 1,216,721,352.52, 1,679,075,912.84 and 659,804,251.96
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Solution
The fourth proportional to 1,216,721,352.52, 1,679,075,912.84 and 659,804,251.96 is: 910,530,109.76
Step by Step Solution
- Step 1: Write the proportion equation
1,216,721,352.52 : 1,679,075,912.84 = 659,804,251.96 : x - Step 2: Convert to fraction form
1,216,721,352.52/1,679,075,912.84 = 659,804,251.96/x - Step 3: Cross multiply
1,216,721,352.52x = 1,679,075,912.84 × 659,804,251.96 - Step 4: Simplify right side
1,216,721,352.52x = 1,107,861,426,655,450,368 - Step 5: Solve for x
x = 1,107,861,426,655,450,368/1,216,721,352.52 - Step 6: Final answer
x = 910,530,109.76
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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.