Finding the Fourth Proportional to 1,438,691.01, 2,155,979.11 and 1,056,613.80
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Solution
The fourth proportional to 1,438,691.01, 2,155,979.11 and 1,056,613.80 is: 1,583,409.69
Step by Step Solution
- Step 1: Write the proportion equation
1,438,691.01 : 2,155,979.11 = 1,056,613.80 : x - Step 2: Convert to fraction form
1,438,691.01/2,155,979.11 = 1,056,613.80/x - Step 3: Cross multiply
1,438,691.01x = 2,155,979.11 × 1,056,613.80 - Step 4: Simplify right side
1,438,691.01x = 2,278,037,280,137.72 - Step 5: Solve for x
x = 2,278,037,280,137.72/1,438,691.01 - Step 6: Final answer
x = 1,583,409.69
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.