Finding the Fourth Proportional to 1,187,786.16, 1,638,759.26 and 671,490
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Solution
The fourth proportional to 1,187,786.16, 1,638,759.26 and 671,490 is: 926,438.19
Step by Step Solution
- Step 1: Write the proportion equation
1,187,786.16 : 1,638,759.26 = 671,490 : x - Step 2: Convert to fraction form
1,187,786.16/1,638,759.26 = 671,490/x - Step 3: Cross multiply
1,187,786.16x = 1,638,759.26 × 671,490 - Step 4: Simplify right side
1,187,786.16x = 1,100,410,455,497.40 - Step 5: Solve for x
x = 1,100,410,455,497.40/1,187,786.16 - Step 6: Final answer
x = 926,438.19
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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.