Finding the Fourth Proportional to 1,038,027,912.18, 1,432,473,363.06 and 561,717,945.42
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Solution
The fourth proportional to 1,038,027,912.18, 1,432,473,363.06 and 561,717,945.42 is: 775,167,974.70
Step by Step Solution
- Step 1: Write the proportion equation
1,038,027,912.18 : 1,432,473,363.06 = 561,717,945.42 : x - Step 2: Convert to fraction form
1,038,027,912.18/1,432,473,363.06 = 561,717,945.42/x - Step 3: Cross multiply
1,038,027,912.18x = 1,432,473,363.06 × 561,717,945.42 - Step 4: Simplify right side
1,038,027,912.18x = 804,645,994,366,940,800 - Step 5: Solve for x
x = 804,645,994,366,940,800/1,038,027,912.18 - Step 6: Final answer
x = 775,167,974.70
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1.5x scale
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.