Finding the Fourth Proportional to 1,436,243,907.40, 2,154,187,551.34 and 387,064,190.79
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Solution
The fourth proportional to 1,436,243,907.40, 2,154,187,551.34 and 387,064,190.79 is: 580,548,232.15
Step by Step Solution
- Step 1: Write the proportion equation
1,436,243,907.40 : 2,154,187,551.34 = 387,064,190.79 : x - Step 2: Convert to fraction form
1,436,243,907.40/2,154,187,551.34 = 387,064,190.79/x - Step 3: Cross multiply
1,436,243,907.40x = 2,154,187,551.34 × 387,064,190.79 - Step 4: Simplify right side
1,436,243,907.40x = 833,808,861,369,850,624 - Step 5: Solve for x
x = 833,808,861,369,850,624/1,436,243,907.40 - Step 6: Final answer
x = 580,548,232.15
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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.