Finding the Fourth Proportional to 1,317,247,939.20, 1,975,871,908.80 and 347,899,555.20
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Solution
The fourth proportional to 1,317,247,939.20, 1,975,871,908.80 and 347,899,555.20 is: 521,849,332.80
Step by Step Solution
- Step 1: Write the proportion equation
1,317,247,939.20 : 1,975,871,908.80 = 347,899,555.20 : x - Step 2: Convert to fraction form
1,317,247,939.20/1,975,871,908.80 = 347,899,555.20/x - Step 3: Cross multiply
1,317,247,939.20x = 1,975,871,908.80 × 347,899,555.20 - Step 4: Simplify right side
1,317,247,939.20x = 687,404,958,203,694,976 - Step 5: Solve for x
x = 687,404,958,203,694,976/1,317,247,939.20 - Step 6: Final answer
x = 521,849,332.80
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1.5x scale
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.