Finding the Fourth Proportional to 5,742,414.78, 7,919,207.99 and 4,191,221.13
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Solution
The fourth proportional to 5,742,414.78, 7,919,207.99 and 4,191,221.13 is: 5,779,999.03
Step by Step Solution
- Step 1: Write the proportion equation
5,742,414.78 : 7,919,207.99 = 4,191,221.13 : x - Step 2: Convert to fraction form
5,742,414.78/7,919,207.99 = 4,191,221.13/x - Step 3: Cross multiply
5,742,414.78x = 7,919,207.99 × 4,191,221.13 - Step 4: Simplify right side
5,742,414.78x = 33,191,151,875,403.78 - Step 5: Solve for x
x = 33,191,151,875,403.78/5,742,414.78 - Step 6: Final answer
x = 5,779,999.03
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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.