Finding the Fourth Proportional to 2,154,438.64, 2,973,124.56 and 1,187,585.02
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Solution
The fourth proportional to 2,154,438.64, 2,973,124.56 and 1,187,585.02 is: 1,638,866.91
Step by Step Solution
- Step 1: Write the proportion equation
2,154,438.64 : 2,973,124.56 = 1,187,585.02 : x - Step 2: Convert to fraction form
2,154,438.64/2,973,124.56 = 1,187,585.02/x - Step 3: Cross multiply
2,154,438.64x = 2,973,124.56 × 1,187,585.02 - Step 4: Simplify right side
2,154,438.64x = 3,530,838,190,050.09 - Step 5: Solve for x
x = 3,530,838,190,050.09/2,154,438.64 - Step 6: Final answer
x = 1,638,866.91
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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.