Finding the Fourth Proportional to 2,187,655.74, 3,018,965.47 and 1,207,595.31
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Solution
The fourth proportional to 2,187,655.74, 3,018,965.47 and 1,207,595.31 is: 1,666,481.83
Step by Step Solution
- Step 1: Write the proportion equation
2,187,655.74 : 3,018,965.47 = 1,207,595.31 : x - Step 2: Convert to fraction form
2,187,655.74/3,018,965.47 = 1,207,595.31/x - Step 3: Cross multiply
2,187,655.74x = 3,018,965.47 × 1,207,595.31 - Step 4: Simplify right side
2,187,655.74x = 3,645,688,542,623.95 - Step 5: Solve for x
x = 3,645,688,542,623.95/2,187,655.74 - Step 6: Final answer
x = 1,666,481.83
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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.