Finding the Fourth Proportional to 1,187,700.14, 1,638,982.68 and 643,824.56
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Solution
The fourth proportional to 1,187,700.14, 1,638,982.68 and 643,824.56 is: 888,454.31
Step by Step Solution
- Step 1: Write the proportion equation
1,187,700.14 : 1,638,982.68 = 643,824.56 : x - Step 2: Convert to fraction form
1,187,700.14/1,638,982.68 = 643,824.56/x - Step 3: Cross multiply
1,187,700.14x = 1,638,982.68 × 643,824.56 - Step 4: Simplify right side
1,187,700.14x = 1,055,217,302,798.62 - Step 5: Solve for x
x = 1,055,217,302,798.62/1,187,700.14 - Step 6: Final answer
x = 888,454.31
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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.