Finding the Fourth Proportional to 7,408,979.70, 11,113,407.14 and 5,791,109.40
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Solution
The fourth proportional to 7,408,979.70, 11,113,407.14 and 5,791,109.40 is: 8,686,615.32
Step by Step Solution
- Step 1: Write the proportion equation
7,408,979.70 : 11,113,407.14 = 5,791,109.40 : x - Step 2: Convert to fraction form
7,408,979.70/11,113,407.14 = 5,791,109.40/x - Step 3: Cross multiply
7,408,979.70x = 11,113,407.14 × 5,791,109.40 - Step 4: Simplify right side
7,408,979.70x = 64,358,956,554,481.12 - Step 5: Solve for x
x = 64,358,956,554,481.12/7,408,979.70 - Step 6: Final answer
x = 8,686,615.32
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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.