Finding the Fourth Proportional to 644,012.10, 888,124.68 and 469,423.62
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Solution
The fourth proportional to 644,012.10, 888,124.68 and 469,423.62 is: 647,358.49
Step by Step Solution
- Step 1: Write the proportion equation
644,012.10 : 888,124.68 = 469,423.62 : x - Step 2: Convert to fraction form
644,012.10/888,124.68 = 469,423.62/x - Step 3: Cross multiply
644,012.10x = 888,124.68 × 469,423.62 - Step 4: Simplify right side
644,012.10x = 416,906,702,296.94 - Step 5: Solve for x
x = 416,906,702,296.94/644,012.10 - Step 6: Final answer
x = 647,358.49
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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.