Finding the Fourth Proportional to 782,278.17, 1,079,358.85 and 442,746.42
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Solution
The fourth proportional to 782,278.17, 1,079,358.85 and 442,746.42 is: 610,885.34
Step by Step Solution
- Step 1: Write the proportion equation
782,278.17 : 1,079,358.85 = 442,746.42 : x - Step 2: Convert to fraction form
782,278.17/1,079,358.85 = 442,746.42/x - Step 3: Cross multiply
782,278.17x = 1,079,358.85 × 442,746.42 - Step 4: Simplify right side
782,278.17x = 477,882,266,732.82 - Step 5: Solve for x
x = 477,882,266,732.82/782,278.17 - Step 6: Final answer
x = 610,885.34
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1.5x scale
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.