Finding the Fourth Proportional to 1,208,421.02, 1,667,587.74 and 664,556.80
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Solution
The fourth proportional to 1,208,421.02, 1,667,587.74 and 664,556.80 is: 917,070.09
Step by Step Solution
- Step 1: Write the proportion equation
1,208,421.02 : 1,667,587.74 = 664,556.80 : x - Step 2: Convert to fraction form
1,208,421.02/1,667,587.74 = 664,556.80/x - Step 3: Cross multiply
1,208,421.02x = 1,667,587.74 × 664,556.80 - Step 4: Simplify right side
1,208,421.02x = 1,108,206,772,213.63 - Step 5: Solve for x
x = 1,108,206,772,213.63/1,208,421.02 - Step 6: Final answer
x = 917,070.09
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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.