Finding the Fourth Proportional to 877,815.12, 1,211,389.92 and 475,407.12
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Solution
The fourth proportional to 877,815.12, 1,211,389.92 and 475,407.12 is: 656,064.56
Step by Step Solution
- Step 1: Write the proportion equation
877,815.12 : 1,211,389.92 = 475,407.12 : x - Step 2: Convert to fraction form
877,815.12/1,211,389.92 = 475,407.12/x - Step 3: Cross multiply
877,815.12x = 1,211,389.92 × 475,407.12 - Step 4: Simplify right side
877,815.12x = 575,903,393,064.23 - Step 5: Solve for x
x = 575,903,393,064.23/877,815.12 - Step 6: Final answer
x = 656,064.56
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1.5x scale
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.