Finding the Fourth Proportional to 1,125,402.40, 1,553,203.16 and 641,856.70
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Solution
The fourth proportional to 1,125,402.40, 1,553,203.16 and 641,856.70 is: 885,846.57
Step by Step Solution
- Step 1: Write the proportion equation
1,125,402.40 : 1,553,203.16 = 641,856.70 : x - Step 2: Convert to fraction form
1,125,402.40/1,553,203.16 = 641,856.70/x - Step 3: Cross multiply
1,125,402.40x = 1,553,203.16 × 641,856.70 - Step 4: Simplify right side
1,125,402.40x = 996,933,851,497.89 - Step 5: Solve for x
x = 996,933,851,497.89/1,125,402.40 - Step 6: Final answer
x = 885,846.57
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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.