Finding the Fourth Proportional to 1,379,088,887.38, 1,903,126,986.84 and 752,567,974.90
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Solution
The fourth proportional to 1,379,088,887.38, 1,903,126,986.84 and 752,567,974.90 is: 1,038,535,250.03
Step by Step Solution
- Step 1: Write the proportion equation
1,379,088,887.38 : 1,903,126,986.84 = 752,567,974.90 : x - Step 2: Convert to fraction form
1,379,088,887.38/1,903,126,986.84 = 752,567,974.90/x - Step 3: Cross multiply
1,379,088,887.38x = 1,903,126,986.84 × 752,567,974.90 - Step 4: Simplify right side
1,379,088,887.38x = 1,432,232,422,463,717,632 - Step 5: Solve for x
x = 1,432,232,422,463,717,632/1,379,088,887.38 - Step 6: Final answer
x = 1,038,535,250.03
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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.