Finding the Fourth Proportional to 1,430,986.23, 1,974,719.86 and 786,405.65
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Solution
The fourth proportional to 1,430,986.23, 1,974,719.86 and 786,405.65 is: 1,085,217.18
Step by Step Solution
- Step 1: Write the proportion equation
1,430,986.23 : 1,974,719.86 = 786,405.65 : x - Step 2: Convert to fraction form
1,430,986.23/1,974,719.86 = 786,405.65/x - Step 3: Cross multiply
1,430,986.23x = 1,974,719.86 × 786,405.65 - Step 4: Simplify right side
1,430,986.23x = 1,552,930,843,231.60 - Step 5: Solve for x
x = 1,552,930,843,231.60/1,430,986.23 - Step 6: Final answer
x = 1,085,217.18
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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.