Finding the Fourth Proportional to 426,331.60, 639,727.80 and 189,710.80
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Solution
The fourth proportional to 426,331.60, 639,727.80 and 189,710.80 is: 284,668.72
Step by Step Solution
- Step 1: Write the proportion equation
426,331.60 : 639,727.80 = 189,710.80 : x - Step 2: Convert to fraction form
426,331.60/639,727.80 = 189,710.80/x - Step 3: Cross multiply
426,331.60x = 639,727.80 × 189,710.80 - Step 4: Simplify right side
426,331.60x = 121,363,272,720.24 - Step 5: Solve for x
x = 121,363,272,720.24/426,331.60 - Step 6: Final answer
x = 284,668.72
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.