Finding the Fourth Proportional to 2,187,566.91, 3,019,014.21 and 1,207,700.70
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Solution
The fourth proportional to 2,187,566.91, 3,019,014.21 and 1,207,700.70 is: 1,666,721.85
Step by Step Solution
- Step 1: Write the proportion equation
2,187,566.91 : 3,019,014.21 = 1,207,700.70 : x - Step 2: Convert to fraction form
2,187,566.91/3,019,014.21 = 1,207,700.70/x - Step 3: Cross multiply
2,187,566.91x = 3,019,014.21 × 1,207,700.70 - Step 4: Simplify right side
2,187,566.91x = 3,646,065,574,726.95 - Step 5: Solve for x
x = 3,646,065,574,726.95/2,187,566.91 - Step 6: Final answer
x = 1,666,721.85
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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.