Finding the Fourth Proportional to 1,230,579.38, 1,698,203.40 and 686,738.18
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Solution
The fourth proportional to 1,230,579.38, 1,698,203.40 and 686,738.18 is: 947,700.84
Step by Step Solution
- Step 1: Write the proportion equation
1,230,579.38 : 1,698,203.40 = 686,738.18 : x - Step 2: Convert to fraction form
1,230,579.38/1,698,203.40 = 686,738.18/x - Step 3: Cross multiply
1,230,579.38x = 1,698,203.40 × 686,738.18 - Step 4: Simplify right side
1,230,579.38x = 1,166,221,112,185.81 - Step 5: Solve for x
x = 1,166,221,112,185.81/1,230,579.38 - Step 6: Final answer
x = 947,700.84
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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.