Finding the Fourth Proportional to 1,420,502.74, 1,960,218.84 and 775,913.65
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Solution
The fourth proportional to 1,420,502.74, 1,960,218.84 and 775,913.65 is: 1,070,719.90
Step by Step Solution
- Step 1: Write the proportion equation
1,420,502.74 : 1,960,218.84 = 775,913.65 : x - Step 2: Convert to fraction form
1,420,502.74/1,960,218.84 = 775,913.65/x - Step 3: Cross multiply
1,420,502.74x = 1,960,218.84 × 775,913.65 - Step 4: Simplify right side
1,420,502.74x = 1,520,960,554,943.17 - Step 5: Solve for x
x = 1,520,960,554,943.17/1,420,502.74 - Step 6: Final answer
x = 1,070,719.90
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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.