Finding the Fourth Proportional to 1,187,986.58, 1,639,496.13 and 651,442.58
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Solution
The fourth proportional to 1,187,986.58, 1,639,496.13 and 651,442.58 is: 899,031.70
Step by Step Solution
- Step 1: Write the proportion equation
1,187,986.58 : 1,639,496.13 = 651,442.58 : x - Step 2: Convert to fraction form
1,187,986.58/1,639,496.13 = 651,442.58/x - Step 3: Cross multiply
1,187,986.58x = 1,639,496.13 × 651,442.58 - Step 4: Simplify right side
1,187,986.58x = 1,068,037,588,827.22 - Step 5: Solve for x
x = 1,068,037,588,827.22/1,187,986.58 - Step 6: Final answer
x = 899,031.70
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1.5x scale
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.