Finding the Fourth Proportional to 690,980.99, 1,036,421.57 and 217,801.79
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Solution
The fourth proportional to 690,980.99, 1,036,421.57 and 217,801.79 is: 326,686.95
Step by Step Solution
- Step 1: Write the proportion equation
690,980.99 : 1,036,421.57 = 217,801.79 : x - Step 2: Convert to fraction form
690,980.99/1,036,421.57 = 217,801.79/x - Step 3: Cross multiply
690,980.99x = 1,036,421.57 × 217,801.79 - Step 4: Simplify right side
690,980.99x = 225,734,472,051.60 - Step 5: Solve for x
x = 225,734,472,051.60/690,980.99 - Step 6: Final answer
x = 326,686.95
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1.5x scale
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.