Finding the Fourth Proportional to 5,708,920.50, 7,878,418.38 and 3,130,447.50
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Solution
The fourth proportional to 5,708,920.50, 7,878,418.38 and 3,130,447.50 is: 4,320,076.82
Step by Step Solution
- Step 1: Write the proportion equation
5,708,920.50 : 7,878,418.38 = 3,130,447.50 : x - Step 2: Convert to fraction form
5,708,920.50/7,878,418.38 = 3,130,447.50/x - Step 3: Cross multiply
5,708,920.50x = 7,878,418.38 × 3,130,447.50 - Step 4: Simplify right side
5,708,920.50x = 24,662,975,121,625.05 - Step 5: Solve for x
x = 24,662,975,121,625.05/5,708,920.50 - Step 6: Final answer
x = 4,320,076.82
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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.