Finding the Fourth Proportional to 1,186,303.91, 1,637,090.84 and 642,427.09
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Solution
The fourth proportional to 1,186,303.91, 1,637,090.84 and 642,427.09 is: 886,544.74
Step by Step Solution
- Step 1: Write the proportion equation
1,186,303.91 : 1,637,090.84 = 642,427.09 : x - Step 2: Convert to fraction form
1,186,303.91/1,637,090.84 = 642,427.09/x - Step 3: Cross multiply
1,186,303.91x = 1,637,090.84 × 642,427.09 - Step 4: Simplify right side
1,186,303.91x = 1,051,711,498,630.50 - Step 5: Solve for x
x = 1,051,711,498,630.50/1,186,303.91 - Step 6: Final answer
x = 886,544.74
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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.