Finding the Fourth Proportional to 782,358.10, 1,078,594.05 and 668,855.91
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Solution
The fourth proportional to 782,358.10, 1,078,594.05 and 668,855.91 is: 922,114.83
Step by Step Solution
- Step 1: Write the proportion equation
782,358.10 : 1,078,594.05 = 668,855.91 : x - Step 2: Convert to fraction form
782,358.10/1,078,594.05 = 668,855.91/x - Step 3: Cross multiply
782,358.10x = 1,078,594.05 × 668,855.91 - Step 4: Simplify right side
782,358.10x = 721,424,004,833.34 - Step 5: Solve for x
x = 721,424,004,833.34/782,358.10 - Step 6: Final answer
x = 922,114.83
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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.