Finding the Fourth Proportional to 1,176,621,782.20, 1,761,747,623.70 and 921,817,814.20
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Solution
The fourth proportional to 1,176,621,782.20, 1,761,747,623.70 and 921,817,814.20 is: 1,380,231,411.84
Step by Step Solution
- Step 1: Write the proportion equation
1,176,621,782.20 : 1,761,747,623.70 = 921,817,814.20 : x - Step 2: Convert to fraction form
1,176,621,782.20/1,761,747,623.70 = 921,817,814.20/x - Step 3: Cross multiply
1,176,621,782.20x = 1,761,747,623.70 × 921,817,814.20 - Step 4: Simplify right side
1,176,621,782.20x = 1,624,010,343,651,178,240 - Step 5: Solve for x
x = 1,624,010,343,651,178,240/1,176,621,782.20 - Step 6: Final answer
x = 1,380,231,411.84
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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.