Finding the Fourth Proportional to 1,768,117.70, 2,652,176.55 and 438,421.70
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Solution
The fourth proportional to 1,768,117.70, 2,652,176.55 and 438,421.70 is: 657,632.55
Step by Step Solution
- Step 1: Write the proportion equation
1,768,117.70 : 2,652,176.55 = 438,421.70 : x - Step 2: Convert to fraction form
1,768,117.70/2,652,176.55 = 438,421.70/x - Step 3: Cross multiply
1,768,117.70x = 2,652,176.55 × 438,421.70 - Step 4: Simplify right side
1,768,117.70x = 1,162,771,751,751.14 - Step 5: Solve for x
x = 1,162,771,751,751.14/1,768,117.70 - Step 6: Final answer
x = 657,632.55
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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.