Finding the Fourth Proportional to 4,753,862.25, 7,128,212.64 and 2,158,742.13
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Solution
The fourth proportional to 4,753,862.25, 7,128,212.64 and 2,158,742.13 is: 3,236,941.28
Step by Step Solution
- Step 1: Write the proportion equation
4,753,862.25 : 7,128,212.64 = 2,158,742.13 : x - Step 2: Convert to fraction form
4,753,862.25/7,128,212.64 = 2,158,742.13/x - Step 3: Cross multiply
4,753,862.25x = 7,128,212.64 × 2,158,742.13 - Step 4: Simplify right side
4,753,862.25x = 15,387,972,937,566.52 - Step 5: Solve for x
x = 15,387,972,937,566.52/4,753,862.25 - Step 6: Final answer
x = 3,236,941.28
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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.