Finding the Fourth Proportional to 685,424,581.94, 1,028,284,368.62 and 212,714,289.41
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Solution
The fourth proportional to 685,424,581.94, 1,028,284,368.62 and 212,714,289.41 is: 319,117,207.84
Step by Step Solution
- Step 1: Write the proportion equation
685,424,581.94 : 1,028,284,368.62 = 212,714,289.41 : x - Step 2: Convert to fraction form
685,424,581.94/1,028,284,368.62 = 212,714,289.41/x - Step 3: Cross multiply
685,424,581.94x = 1,028,284,368.62 × 212,714,289.41 - Step 4: Simplify right side
685,424,581.94x = 218,730,778,776,208,800 - Step 5: Solve for x
x = 218,730,778,776,208,800/685,424,581.94 - Step 6: Final answer
x = 319,117,207.84
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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.