Finding the Fourth Proportional to 1,292,817.28, 1,939,226.10 and 346,163.80
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Solution
The fourth proportional to 1,292,817.28, 1,939,226.10 and 346,163.80 is: 519,245.75
Step by Step Solution
- Step 1: Write the proportion equation
1,292,817.28 : 1,939,226.10 = 346,163.80 : x - Step 2: Convert to fraction form
1,292,817.28/1,939,226.10 = 346,163.80/x - Step 3: Cross multiply
1,292,817.28x = 1,939,226.10 × 346,163.80 - Step 4: Simplify right side
1,292,817.28x = 671,289,875,835.18 - Step 5: Solve for x
x = 671,289,875,835.18/1,292,817.28 - Step 6: Final answer
x = 519,245.75
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.