Finding the Fourth Proportional to 1,211,799.15, 1,672,206.75 and 667,904.99
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Solution
The fourth proportional to 1,211,799.15, 1,672,206.75 and 667,904.99 is: 921,666.95
Step by Step Solution
- Step 1: Write the proportion equation
1,211,799.15 : 1,672,206.75 = 667,904.99 : x - Step 2: Convert to fraction form
1,211,799.15/1,672,206.75 = 667,904.99/x - Step 3: Cross multiply
1,211,799.15x = 1,672,206.75 × 667,904.99 - Step 4: Simplify right side
1,211,799.15x = 1,116,875,224,275.65 - Step 5: Solve for x
x = 1,116,875,224,275.65/1,211,799.15 - Step 6: Final answer
x = 921,666.95
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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.