Finding the Fourth Proportional to 1,557,917.13, 2,149,932.12 and 842,525.13
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Solution
The fourth proportional to 1,557,917.13, 2,149,932.12 and 842,525.13 is: 1,162,688.18
Step by Step Solution
- Step 1: Write the proportion equation
1,557,917.13 : 2,149,932.12 = 842,525.13 : x - Step 2: Convert to fraction form
1,557,917.13/2,149,932.12 = 842,525.13/x - Step 3: Cross multiply
1,557,917.13x = 2,149,932.12 × 842,525.13 - Step 4: Simplify right side
1,557,917.13x = 1,811,371,838,894.18 - Step 5: Solve for x
x = 1,811,371,838,894.18/1,557,917.13 - Step 6: Final answer
x = 1,162,688.18
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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.