Finding the Fourth Proportional to 1,421,411.36, 1,961,358.18 and 912,802.64
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Solution
The fourth proportional to 1,421,411.36, 1,961,358.18 and 912,802.64 is: 1,259,545.95
Step by Step Solution
- Step 1: Write the proportion equation
1,421,411.36 : 1,961,358.18 = 912,802.64 : x - Step 2: Convert to fraction form
1,421,411.36/1,961,358.18 = 912,802.64/x - Step 3: Cross multiply
1,421,411.36x = 1,961,358.18 × 912,802.64 - Step 4: Simplify right side
1,421,411.36x = 1,790,332,924,689.60 - Step 5: Solve for x
x = 1,790,332,924,689.60/1,421,411.36 - Step 6: Final answer
x = 1,259,545.95
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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.