Finding the Fourth Proportional to 1,292,912,341.55, 1,939,368,537.98 and 310,338,880.82
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Solution
The fourth proportional to 1,292,912,341.55, 1,939,368,537.98 and 310,338,880.82 is: 465,508,327.39
Step by Step Solution
- Step 1: Write the proportion equation
1,292,912,341.55 : 1,939,368,537.98 = 310,338,880.82 : x - Step 2: Convert to fraction form
1,292,912,341.55/1,939,368,537.98 = 310,338,880.82/x - Step 3: Cross multiply
1,292,912,341.55x = 1,939,368,537.98 × 310,338,880.82 - Step 4: Simplify right side
1,292,912,341.55x = 601,861,461,574,232,832 - Step 5: Solve for x
x = 601,861,461,574,232,832/1,292,912,341.55 - Step 6: Final answer
x = 465,508,327.39
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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.