Finding the Fourth Proportional to 690,412.10, 1,034,291.37 and 423,393.98
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Solution
The fourth proportional to 690,412.10, 1,034,291.37 and 423,393.98 is: 634,277.32
Step by Step Solution
- Step 1: Write the proportion equation
690,412.10 : 1,034,291.37 = 423,393.98 : x - Step 2: Convert to fraction form
690,412.10/1,034,291.37 = 423,393.98/x - Step 3: Cross multiply
690,412.10x = 1,034,291.37 × 423,393.98 - Step 4: Simplify right side
690,412.10x = 437,912,739,623.95 - Step 5: Solve for x
x = 437,912,739,623.95/690,412.10 - Step 6: Final answer
x = 634,277.32
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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.