Finding the Fourth Proportional to 1,293,124.77, 1,784,029.73 and 1,291,131.09
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Solution
The fourth proportional to 1,293,124.77, 1,784,029.73 and 1,291,131.09 is: 1,781,279.19
Step by Step Solution
- Step 1: Write the proportion equation
1,293,124.77 : 1,784,029.73 = 1,291,131.09 : x - Step 2: Convert to fraction form
1,293,124.77/1,784,029.73 = 1,291,131.09/x - Step 3: Cross multiply
1,293,124.77x = 1,784,029.73 × 1,291,131.09 - Step 4: Simplify right side
1,293,124.77x = 2,303,416,243,431.65 - Step 5: Solve for x
x = 2,303,416,243,431.65/1,293,124.77 - Step 6: Final answer
x = 1,781,279.19
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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.