Finding the Fourth Proportional to 1,387,698.75, 2,070,352.98 and 1,236,238.07
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Solution
The fourth proportional to 1,387,698.75, 2,070,352.98 and 1,236,238.07 is: 1,844,383.85
Step by Step Solution
- Step 1: Write the proportion equation
1,387,698.75 : 2,070,352.98 = 1,236,238.07 : x - Step 2: Convert to fraction form
1,387,698.75/2,070,352.98 = 1,236,238.07/x - Step 3: Cross multiply
1,387,698.75x = 2,070,352.98 × 1,236,238.07 - Step 4: Simplify right side
1,387,698.75x = 2,559,449,161,862.18 - Step 5: Solve for x
x = 2,559,449,161,862.18/1,387,698.75 - Step 6: Final answer
x = 1,844,383.85
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.