Finding the Fourth Proportional to 1,177,489,869.91, 1,624,946,916.74 and 648,872,772.50
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Solution
The fourth proportional to 1,177,489,869.91, 1,624,946,916.74 and 648,872,772.50 is: 895,450,430.60
Step by Step Solution
- Step 1: Write the proportion equation
1,177,489,869.91 : 1,624,946,916.74 = 648,872,772.50 : x - Step 2: Convert to fraction form
1,177,489,869.91/1,624,946,916.74 = 648,872,772.50/x - Step 3: Cross multiply
1,177,489,869.91x = 1,624,946,916.74 × 648,872,772.50 - Step 4: Simplify right side
1,177,489,869.91x = 1,054,383,811,030,410,496 - Step 5: Solve for x
x = 1,054,383,811,030,410,496/1,177,489,869.91 - Step 6: Final answer
x = 895,450,430.60
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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.