Finding the Fourth Proportional to 1,279,747,737.87, 1,765,962,675.86 and 722,723,168.13
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Solution
The fourth proportional to 1,279,747,737.87, 1,765,962,675.86 and 722,723,168.13 is: 997,307,595.96
Step by Step Solution
- Step 1: Write the proportion equation
1,279,747,737.87 : 1,765,962,675.86 = 722,723,168.13 : x - Step 2: Convert to fraction form
1,279,747,737.87/1,765,962,675.86 = 722,723,168.13/x - Step 3: Cross multiply
1,279,747,737.87x = 1,765,962,675.86 × 722,723,168.13 - Step 4: Simplify right side
1,279,747,737.87x = 1,276,302,139,893,257,984 - Step 5: Solve for x
x = 1,276,302,139,893,257,984/1,279,747,737.87 - Step 6: Final answer
x = 997,307,595.96
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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.