Finding the Fourth Proportional to 1,178,743.80, 1,768,115.70 and 292,279.80
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Solution
The fourth proportional to 1,178,743.80, 1,768,115.70 and 292,279.80 is: 438,419.70
Step by Step Solution
- Step 1: Write the proportion equation
1,178,743.80 : 1,768,115.70 = 292,279.80 : x - Step 2: Convert to fraction form
1,178,743.80/1,768,115.70 = 292,279.80/x - Step 3: Cross multiply
1,178,743.80x = 1,768,115.70 × 292,279.80 - Step 4: Simplify right side
1,178,743.80x = 516,784,503,172.86 - Step 5: Solve for x
x = 516,784,503,172.86/1,178,743.80 - Step 6: Final answer
x = 438,419.70
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1.5x scale
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.