Finding the Fourth Proportional to 2,139,615,235.68, 3,209,447,563.26 and 645,659,723.67
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Solution
The fourth proportional to 2,139,615,235.68, 3,209,447,563.26 and 645,659,723.67 is: 968,497,042.03
Step by Step Solution
- Step 1: Write the proportion equation
2,139,615,235.68 : 3,209,447,563.26 = 645,659,723.67 : x - Step 2: Convert to fraction form
2,139,615,235.68/3,209,447,563.26 = 645,659,723.67/x - Step 3: Cross multiply
2,139,615,235.68x = 3,209,447,563.26 × 645,659,723.67 - Step 4: Simplify right side
2,139,615,235.68x = 2,072,211,026,827,806,464 - Step 5: Solve for x
x = 2,072,211,026,827,806,464/2,139,615,235.68 - Step 6: Final answer
x = 968,497,042.03
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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.