Finding the Fourth Proportional to 1,259,348,117.90, 1,738,457,745.34 and 813,528,905.42
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Solution
The fourth proportional to 1,259,348,117.90, 1,738,457,745.34 and 813,528,905.42 is: 1,123,029,928.41
Step by Step Solution
- Step 1: Write the proportion equation
1,259,348,117.90 : 1,738,457,745.34 = 813,528,905.42 : x - Step 2: Convert to fraction form
1,259,348,117.90/1,738,457,745.34 = 813,528,905.42/x - Step 3: Cross multiply
1,259,348,117.90x = 1,738,457,745.34 × 813,528,905.42 - Step 4: Simplify right side
1,259,348,117.90x = 1,414,285,626,685,371,136 - Step 5: Solve for x
x = 1,414,285,626,685,371,136/1,259,348,117.90 - Step 6: Final answer
x = 1,123,029,928.41
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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.