Finding the Fourth Proportional to 1,982,781.36, 2,736,263.16 and 1,077,378.48
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Solution
The fourth proportional to 1,982,781.36, 2,736,263.16 and 1,077,378.48 is: 1,486,795.82
Step by Step Solution
- Step 1: Write the proportion equation
1,982,781.36 : 2,736,263.16 = 1,077,378.48 : x - Step 2: Convert to fraction form
1,982,781.36/2,736,263.16 = 1,077,378.48/x - Step 3: Cross multiply
1,982,781.36x = 2,736,263.16 × 1,077,378.48 - Step 4: Simplify right side
1,982,781.36x = 2,947,991,044,200.80 - Step 5: Solve for x
x = 2,947,991,044,200.80/1,982,781.36 - Step 6: Final answer
x = 1,486,795.82
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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.