Finding the Fourth Proportional to 685,167,751.58, 945,507,032.81 and 387,803,609.26
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Solution
The fourth proportional to 685,167,751.58, 945,507,032.81 and 387,803,609.26 is: 535,155,133.99
Step by Step Solution
- Step 1: Write the proportion equation
685,167,751.58 : 945,507,032.81 = 387,803,609.26 : x - Step 2: Convert to fraction form
685,167,751.58/945,507,032.81 = 387,803,609.26/x - Step 3: Cross multiply
685,167,751.58x = 945,507,032.81 × 387,803,609.26 - Step 4: Simplify right side
685,167,751.58x = 366,671,039,902,300,160 - Step 5: Solve for x
x = 366,671,039,902,300,160/685,167,751.58 - Step 6: Final answer
x = 535,155,133.99
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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.