Finding the Fourth Proportional to 915,609.12, 1,263,555.71 and 507,728.17
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Solution
The fourth proportional to 915,609.12, 1,263,555.71 and 507,728.17 is: 700,673.26
Step by Step Solution
- Step 1: Write the proportion equation
915,609.12 : 1,263,555.71 = 507,728.17 : x - Step 2: Convert to fraction form
915,609.12/1,263,555.71 = 507,728.17/x - Step 3: Cross multiply
915,609.12x = 1,263,555.71 × 507,728.17 - Step 4: Simplify right side
915,609.12x = 641,542,828,331.35 - Step 5: Solve for x
x = 641,542,828,331.35/915,609.12 - Step 6: Final answer
x = 700,673.26
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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.