Finding the Fourth Proportional to 1,029,037.29, 1,420,122.11 and 621,132.63
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Solution
The fourth proportional to 1,029,037.29, 1,420,122.11 and 621,132.63 is: 857,193.60
Step by Step Solution
- Step 1: Write the proportion equation
1,029,037.29 : 1,420,122.11 = 621,132.63 : x - Step 2: Convert to fraction form
1,029,037.29/1,420,122.11 = 621,132.63/x - Step 3: Cross multiply
1,029,037.29x = 1,420,122.11 × 621,132.63 - Step 4: Simplify right side
1,029,037.29x = 882,084,177,999.79 - Step 5: Solve for x
x = 882,084,177,999.79/1,029,037.29 - Step 6: Final answer
x = 857,193.60
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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.