Finding the Fourth Proportional to 3,847,671.98, 5,309,943.63 and 2,128,764.50
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Solution
The fourth proportional to 3,847,671.98, 5,309,943.63 and 2,128,764.50 is: 2,937,781.48
Step by Step Solution
- Step 1: Write the proportion equation
3,847,671.98 : 5,309,943.63 = 2,128,764.50 : x - Step 2: Convert to fraction form
3,847,671.98/5,309,943.63 = 2,128,764.50/x - Step 3: Cross multiply
3,847,671.98x = 5,309,943.63 × 2,128,764.50 - Step 4: Simplify right side
3,847,671.98x = 11,303,619,496,545.13 - Step 5: Solve for x
x = 11,303,619,496,545.13/3,847,671.98 - Step 6: Final answer
x = 2,937,781.48
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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.