Finding the Fourth Proportional to 1,230,556.10, 1,698,167.78 and 679,272.18
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Solution
The fourth proportional to 1,230,556.10, 1,698,167.78 and 679,272.18 is: 937,395.80
Step by Step Solution
- Step 1: Write the proportion equation
1,230,556.10 : 1,698,167.78 = 679,272.18 : x - Step 2: Convert to fraction form
1,230,556.10/1,698,167.78 = 679,272.18/x - Step 3: Cross multiply
1,230,556.10x = 1,698,167.78 × 679,272.18 - Step 4: Simplify right side
1,230,556.10x = 1,153,518,126,530.05 - Step 5: Solve for x
x = 1,153,518,126,530.05/1,230,556.10 - Step 6: Final answer
x = 937,395.80
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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.