Finding the Fourth Proportional to 1,381,050,137.11, 1,905,849,953.76 and 745,970,625.67
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Solution
The fourth proportional to 1,381,050,137.11, 1,905,849,953.76 and 745,970,625.67 is: 1,029,439,876.39
Step by Step Solution
- Step 1: Write the proportion equation
1,381,050,137.11 : 1,905,849,953.76 = 745,970,625.67 : x - Step 2: Convert to fraction form
1,381,050,137.11/1,905,849,953.76 = 745,970,625.67/x - Step 3: Cross multiply
1,381,050,137.11x = 1,905,849,953.76 × 745,970,625.67 - Step 4: Simplify right side
1,381,050,137.11x = 1,421,708,082,439,487,744 - Step 5: Solve for x
x = 1,421,708,082,439,487,744/1,381,050,137.11 - Step 6: Final answer
x = 1,029,439,876.39
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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.