Finding the Fourth Proportional to 1,816,688,792.48, 2,507,031,632.21 and 981,313,732.13
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Solution
The fourth proportional to 1,816,688,792.48, 2,507,031,632.21 and 981,313,732.13 is: 1,354,213,543.75
Step by Step Solution
- Step 1: Write the proportion equation
1,816,688,792.48 : 2,507,031,632.21 = 981,313,732.13 : x - Step 2: Convert to fraction form
1,816,688,792.48/2,507,031,632.21 = 981,313,732.13/x - Step 3: Cross multiply
1,816,688,792.48x = 2,507,031,632.21 × 981,313,732.13 - Step 4: Simplify right side
1,816,688,792.48x = 2,460,184,567,554,519,040 - Step 5: Solve for x
x = 2,460,184,567,554,519,040/1,816,688,792.48 - Step 6: Final answer
x = 1,354,213,543.75
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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.