Finding the Fourth Proportional to 1,664,638.81, 2,297,202.87 and 1,155,636.43
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Solution
The fourth proportional to 1,664,638.81, 2,297,202.87 and 1,155,636.43 is: 1,594,779.18
Step by Step Solution
- Step 1: Write the proportion equation
1,664,638.81 : 2,297,202.87 = 1,155,636.43 : x - Step 2: Convert to fraction form
1,664,638.81/2,297,202.87 = 1,155,636.43/x - Step 3: Cross multiply
1,664,638.81x = 2,297,202.87 × 1,155,636.43 - Step 4: Simplify right side
1,664,638.81x = 2,654,731,323,672.55 - Step 5: Solve for x
x = 2,654,731,323,672.55/1,664,638.81 - Step 6: Final answer
x = 1,594,779.18
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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.