Finding the Fourth Proportional to 1,292,162.35, 1,782,705.75 and 1,290,169.48
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Solution
The fourth proportional to 1,292,162.35, 1,782,705.75 and 1,290,169.48 is: 1,779,956.33
Step by Step Solution
- Step 1: Write the proportion equation
1,292,162.35 : 1,782,705.75 = 1,290,169.48 : x - Step 2: Convert to fraction form
1,292,162.35/1,782,705.75 = 1,290,169.48/x - Step 3: Cross multiply
1,292,162.35x = 1,782,705.75 × 1,290,169.48 - Step 4: Simplify right side
1,292,162.35x = 2,299,992,550,470.51 - Step 5: Solve for x
x = 2,299,992,550,470.51/1,292,162.35 - Step 6: Final answer
x = 1,779,956.33
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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.