Finding the Fourth Proportional to 1,690,680.74, 2,331,778.99 and 1,486,294.65
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Solution
The fourth proportional to 1,690,680.74, 2,331,778.99 and 1,486,294.65 is: 2,049,890.65
Step by Step Solution
- Step 1: Write the proportion equation
1,690,680.74 : 2,331,778.99 = 1,486,294.65 : x - Step 2: Convert to fraction form
1,690,680.74/2,331,778.99 = 1,486,294.65/x - Step 3: Cross multiply
1,690,680.74x = 2,331,778.99 × 1,486,294.65 - Step 4: Simplify right side
1,690,680.74x = 3,465,710,630,387.93 - Step 5: Solve for x
x = 3,465,710,630,387.93/1,690,680.74 - Step 6: Final answer
x = 2,049,890.65
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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.