Finding the Fourth Proportional to 1,368,210.40, 1,888,117.68 and 756,401.20
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Solution
The fourth proportional to 1,368,210.40, 1,888,117.68 and 756,401.20 is: 1,043,826.65
Step by Step Solution
- Step 1: Write the proportion equation
1,368,210.40 : 1,888,117.68 = 756,401.20 : x - Step 2: Convert to fraction form
1,368,210.40/1,888,117.68 = 756,401.20/x - Step 3: Cross multiply
1,368,210.40x = 1,888,117.68 × 756,401.20 - Step 4: Simplify right side
1,368,210.40x = 1,428,174,478,893.22 - Step 5: Solve for x
x = 1,428,174,478,893.22/1,368,210.40 - Step 6: Final answer
x = 1,043,826.65
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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.