Finding the Fourth Proportional to 1,556,430.90, 2,147,878.20 and 877,367.40
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Solution
The fourth proportional to 1,556,430.90, 2,147,878.20 and 877,367.40 is: 1,210,769.02
Step by Step Solution
- Step 1: Write the proportion equation
1,556,430.90 : 2,147,878.20 = 877,367.40 : x - Step 2: Convert to fraction form
1,556,430.90/2,147,878.20 = 877,367.40/x - Step 3: Cross multiply
1,556,430.90x = 2,147,878.20 × 877,367.40 - Step 4: Simplify right side
1,556,430.90x = 1,884,478,311,850.68 - Step 5: Solve for x
x = 1,884,478,311,850.68/1,556,430.90 - Step 6: Final answer
x = 1,210,769.02
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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.