Finding the Fourth Proportional to 7,856,756.21, 11,781,698.87 and 3,963,818.45
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Solution
The fourth proportional to 7,856,756.21, 11,781,698.87 and 3,963,818.45 is: 5,943,994.45
Step by Step Solution
- Step 1: Write the proportion equation
7,856,756.21 : 11,781,698.87 = 3,963,818.45 : x - Step 2: Convert to fraction form
7,856,756.21/11,781,698.87 = 3,963,818.45/x - Step 3: Cross multiply
7,856,756.21x = 11,781,698.87 × 3,963,818.45 - Step 4: Simplify right side
7,856,756.21x = 46,700,515,274,522.56 - Step 5: Solve for x
x = 46,700,515,274,522.56/7,856,756.21 - Step 6: Final answer
x = 5,943,994.45
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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.