Finding the Fourth Proportional to 872,221.23, 1,203,679.50 and 479,769.70
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Solution
The fourth proportional to 872,221.23, 1,203,679.50 and 479,769.70 is: 662,089.99
Step by Step Solution
- Step 1: Write the proportion equation
872,221.23 : 1,203,679.50 = 479,769.70 : x - Step 2: Convert to fraction form
872,221.23/1,203,679.50 = 479,769.70/x - Step 3: Cross multiply
872,221.23x = 1,203,679.50 × 479,769.70 - Step 4: Simplify right side
872,221.23x = 577,488,946,592.75 - Step 5: Solve for x
x = 577,488,946,592.75/872,221.23 - Step 6: Final answer
x = 662,089.99
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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.