Finding the Fourth Proportional to 1,421,756.55, 1,962,023.51 and 777,179.21
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Solution
The fourth proportional to 1,421,756.55, 1,962,023.51 and 777,179.21 is: 1,072,507.02
Step by Step Solution
- Step 1: Write the proportion equation
1,421,756.55 : 1,962,023.51 = 777,179.21 : x - Step 2: Convert to fraction form
1,421,756.55/1,962,023.51 = 777,179.21/x - Step 3: Cross multiply
1,421,756.55x = 1,962,023.51 × 777,179.21 - Step 4: Simplify right side
1,421,756.55x = 1,524,843,873,636.06 - Step 5: Solve for x
x = 1,524,843,873,636.06/1,421,756.55 - Step 6: Final answer
x = 1,072,507.02
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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.