Finding the Fourth Proportional to 1,029,425.70, 1,420,266.99 and 621,372.52
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Solution
The fourth proportional to 1,029,425.70, 1,420,266.99 and 621,372.52 is: 857,288.56
Step by Step Solution
- Step 1: Write the proportion equation
1,029,425.70 : 1,420,266.99 = 621,372.52 : x - Step 2: Convert to fraction form
1,029,425.70/1,420,266.99 = 621,372.52/x - Step 3: Cross multiply
1,029,425.70x = 1,420,266.99 × 621,372.52 - Step 4: Simplify right side
1,029,425.70x = 882,514,878,649.12 - Step 5: Solve for x
x = 882,514,878,649.12/1,029,425.70 - Step 6: Final answer
x = 857,288.56
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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.